Committee for Public Counsel Services v. Attorney General , 480 Mass. 700 ( 2018 )


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    SJC-12471
    COMMITTEE FOR PUBLIC COUNSEL SERVICES & others1    vs.    ATTORNEY
    GENERAL & others.2
    Suffolk.    May 8, 2018. - October 11, 2018.
    Present:    Gants, C.J., Lenk, Gaziano, Lowy, Budd, Cypher,
    & Kafker, JJ.
    Controlled Substances. Constitutional Law, Conduct of
    government agents. Due Process of Law, Disclosure of
    evidence, Conduct of prosecutor. Supreme Judicial Court,
    Superintendence of inferior courts. Practice, Criminal,
    Conduct of prosecutor, Conduct of government agents,
    Postconviction relief. Evidence, Certificate of drug
    analysis, Disclosure of evidence.
    Civil action commenced in the Supreme Judicial Court for
    the county of Suffolk on September 20, 2017.
    1 Hampden County Lawyers for Justice, Inc.; Herschelle
    Reaves; and Nicole Westcott.
    2 District Attorney for the Berkshire District, District
    Attorney for the Bristol District, District Attorney for the
    Cape and Islands District, District Attorney for the Eastern
    District, District Attorney for the Hampden District, District
    Attorney for the Northern District, District Attorney for the
    Norfolk District, District Attorney for the Northwestern
    District, District Attorney for the Plymouth District, District
    Attorney for the Suffolk District, and District Attorney for the
    Middle District.
    2
    The case was reported by Gaziano, J.
    Rebecca A. Jacobstein, Committee for Public Counsel
    Services (Benjamin H. Keehn, Committee for Public Counsel
    Services, also present) for Committee for Public Counsel
    Services.
    Matthew R. Segal (Carlton E. Williams & Daniel N. Marx also
    present) for Hampden County Lawyers for Justice, Inc., & others.
    Thomas E. Bocian, Assistant Attorney General (Anna E.
    Lumelsky & Thomas A. Caldwell, Assistant Attorney General) for
    Attorney General.
    Joseph A. Pieropan, Assistant District Attorney (Susanne M.
    O'Neil, Hallie White Speight, Shoshana Stern, & Sara Concannon
    DeSimone, Assistant District Attorneys, also present) for
    District Attorney for the Berkshire District & others.
    The following submitted briefs for amici curiae:
    Jessica Ring Amunson, of the District of Columbia, & Andrew
    C. Noll for Legal Ethics and Criminal Justice Scholars &
    another.
    Douglas I. Koff, of New York, Adam S. Hoffinger & Nicholas
    A. Dingeldein, of the District of Columbia, & Radha Natarajan
    for The Innocence Project, Inc., & another.
    David M. Siegel & Elizabeth A. Ritvo for Boston Bar
    Association.
    Clark M. Neily, III, & Jay R. Schweikert, of the District
    of Columbia, Monica Shah, & Emma Quinn-Judge for Cato Institute
    & another.
    Steven Fitzgerald, pro se.
    GAZIANO, J.   We are called upon, in the exercise of our
    broad powers of superintendence over the courts of the
    Commonwealth, to remedy egregious governmental misconduct
    arising out of the scandal at the State Laboratory Institute in
    Amherst at the campus of the University of Massachusetts
    (Amherst lab or lab).   The misconduct at issue involves evidence
    tampering by a chemist, Sonja Farak, who stole drugs submitted
    to the lab for testing for her own use, consumed drug
    3
    "standards" that are required for testing, and manipulated
    evidence and the lab's computer system to conceal her actions.
    The government misconduct at issue also involves the deceptive
    withholding of exculpatory evidence by members of the Attorney
    General's office, who were duty-bound to investigate and
    disclose Farak's wrongdoing.
    This is our third decision addressing the Amherst lab
    scandal.    See Commonwealth v. Cotto, 
    471 Mass. 97
    (2015);
    Commonwealth v. Ware, 
    471 Mass. 85
    (2015).     Three years ago, we
    considered evidence that Farak had stolen portions of samples
    from a handful of cases that had been submitted to the lab for
    analysis.   See 
    Cotto, supra
    at 109-110.    Based on the reported
    limited scope of Farak's misconduct, we concluded that evidence
    tampering at the Amherst lab did not constitute "a systemic
    problem" warranting extraordinary relief.      
    Id. at 110.
      We also
    expressed our dissatisfaction with the Commonwealth's "cursory
    at best" investigation into the timing and scope of Farak's
    misconduct.   
    Id. at 111-112.
      We remanded the matter to the
    Superior Court to provide the Commonwealth an opportunity to
    fulfil its duty to "learn of and disclose . . . any exculpatory
    evidence that is held by agents of the prosecution team, who
    include chemists working in State drug laboratories" (citation
    and quotations omitted).    
    Id. at 112,
    120.
    4
    On remand, on December 7, 2015, the Chief Justice of the
    Superior Court appointed Superior Court Judge Richard J. Carey
    to hear all cases arising from Farak's misconduct.   In December,
    2016, Judge Carey conducted an evidentiary hearing over six
    days, after which he found that the government had vastly
    understated the extent of Farak's misconduct.   Moreover, he
    determined that two assistant attorneys general had perpetrated
    a "fraud upon the court" by withholding exculpatory evidence and
    by providing deceptive answers to another judge in order to
    conceal the failure to make mandatory disclosure to criminal
    defendants whose cases were affected by Farak's misconduct.       The
    judge determined that certain cases in which Farak had signed a
    certificate of drug analysis (drug certificate) during her
    employment at the Amherst lab were subject to dismissal.     He
    found further, however, that Farak's misconduct had not
    undermined testing results reported by other chemists who had
    been assigned to the Amherst lab during the period that Farak
    was employed there.
    The petitioners -- the Committee for Public Counsel
    Services; Hampden County Lawyers for Justice, Inc.; and two
    named former criminal defendants -- sought relief in the county
    court through a petition pursuant to G. L. c. 211, § 3, and
    G. L. c. 231A, § 1, claiming that the misconduct by the district
    attorneys and members of the Attorney General's office required
    5
    the imposition of a "global remedy."    The petitioners requested
    that the single justice construct a "global remedy" by vacating
    and dismissing all convictions tainted by the Commonwealth's
    misconduct.    More particularly, the petitioners argued that all
    drug convictions in which the samples had been tested by the
    Amherst lab during Farak's almost nine-year tenure should be
    vacated and dismissed.    In addition, the petitioners asked the
    single justice to exercise the court's superintendence authority
    and to issue prophylactic standing orders designed to ensure
    that, in the future, the Commonwealth timely discloses
    exculpatory evidence, and that procedures are in place to
    prevent a recurrence of a similar situation.
    Following a number of hearings, the district attorneys
    agreed to the vacatur and dismissal of approximately 8,000 cases
    in which Farak had signed a drug certificate.    Two district
    attorneys did not agree to dismissal of all charges, in their
    respective counties, in which Farak had signed the drug
    certificate.   The single justice reserved and reported the
    matter to the full court, and issued three questions for the
    parties to answer in their briefs.   The reported questions
    asked:
    "1. Whether the defendants in some or all of the
    'third letter' cases are entitled to have their convictions
    vacated, and the drug charges against them dismissed with
    prejudice, given the undisputed misconduct of the assistant
    Attorneys General found by Judge Carey in Commonwealth vs.
    6
    Erick Cotto, Hampden Sup. Ct., No. 2007-770 (June 26, 2017)
    (memorandum and order on postconviction motions), and given
    the conduct of the District Attorneys that the petitioners
    allege was improper.
    "2. Whether the definition of 'Farak defendants'
    being employed by the District Attorneys in this case is
    too narrow; specifically, based on the material in the
    record of this case, whether the appropriate definition of
    the class should be expanded to include all defendants who
    pleaded guilty to a drug charge, admitted to sufficient
    facts on a drug charge, or were found guilty of a drug
    charge, if the alleged drugs were tested at the Amherst
    Laboratory during Farak's employment there, regardless [of]
    whether Farak was the analyst or signed the certificates in
    their cases.
    "3. Whether, as the petitioners request, the record
    in this case supports the court's adoption of additional
    prophylactic measures to address future cases involving
    widespread prosecutorial misconduct, and whether the court
    would adopt any such measures in this case."
    After the matter had been reported to the full court, the
    district attorneys agreed to dismiss all of the so-called "third
    letter"3 cases in which Farak had signed the drug certificates,
    rendering moot the first reported question.
    Before this court, however, the respondent district
    attorneys contest the relief sought by the petitioners:
    dismissal of all cases where the drug samples had been tested by
    the other chemists who worked at the Amherst lab during Farak's
    tenure.   The district attorneys argue that there is no factual
    3 "Third letter" cases are "cases that the District
    Attorneys intend to re-prosecute if motions for new trial are
    allowed, and that they represent can be prosecuted independently
    of any drug certificate signed by Farak, or related testimony."
    See Bridgeman v. District Attorney for the Suffolk Dist., 
    476 Mass. 298
    , 328 (2017).
    7
    basis for a conclusion that Farak's misconduct compromised the
    analyses performed by other chemists at the Amherst lab, and
    that prosecutorial misconduct does not merit dismissal of such a
    large group of cases as is at issue here.   In addition, the
    district attorneys contend that existing rules of criminal
    procedure and professional conduct are adequate to ensure that
    prosecutors disclose exculpatory evidence and do so in a timely
    manner.
    The respondent Attorney General contests the petitioners'
    proposed remedy, as well as the result suggested by the district
    attorneys.   The Attorney General proposes a different remedy.
    Based on Farak's admission that she began to tamper with other
    chemists' samples in the summer of 2012, the Attorney General
    contends that those defendants whose drug samples were tested
    between June, 2012, and Farak's arrest in January, 2013, should
    be offered the opportunity to obtain relief under the protocol
    established by this court in Bridgeman v. District Attorney for
    the Suffolk Dist., 
    476 Mass. 298
    , 316-317 (2017) (Bridgeman II).
    We conclude that Farak's widespread evidence tampering has
    compromised the integrity of thousands of drug convictions apart
    from those that the Commonwealth has agreed should be vacated
    and dismissed.   Her misconduct, compounded by prosecutorial
    misconduct, requires that this court exercise its
    superintendence authority and vacate and dismiss all criminal
    8
    convictions tainted by governmental wrongdoing.   While dismissal
    with prejudice "is a remedy of last resort," it is necessary in
    these circumstances (citation omitted).   
    Id. at 316.
       No other
    remedy would suffice in this case, where the governmental
    misconduct was "egregious, deliberate, and intentional," and
    resulted in a violation of constitutional rights that "give[s]
    rise to presumptive prejudice" (citation omitted).     
    Id. Accordingly, to
    answer the second reported question, we
    rely on evidence that Farak's misconduct between 2004, when she
    began working at the Amherst lab, and the end of 2008 was
    limited to stealing from a methamphetamine standard, and that,
    in 2009, she began stealing from police-submitted samples and
    otherwise engaging in widespread evidence tampering.     Thus, we
    define the term "Farak defendant" to include, in addition to
    those defendants whose drug certificate was signed by Farak (and
    whose convictions have been vacated), (1) those individuals who
    were convicted of methamphetamine offenses during Farak's tenure
    at the Amherst lab; and (2) those individuals whose convictions
    were based on drugs tested in the Amherst lab on or after
    January 1, 2009, and through January 18, 2013, the date the lab
    closed, regardless of who signed the drug certificate of
    analysis.
    In response to the third reported question, we ask this
    court's standing advisory committee on the rules of criminal
    9
    procedure to draft proposed amendments to rule 14 of the
    Massachusetts Rules of Criminal Procedure to better define the
    prosecutor's absolute duty to disclose exculpatory evidence in a
    timely manner.4
    Background.   The following facts are drawn from the
    findings by Judge Carey in his exhaustive, 127-page memorandum
    and order on the petitioners' motions to dismiss or for
    postconviction relief, based on the evidence before him at the
    six-day hearing.
    1.   Amherst lab.   In the 1960s, the Department of Public
    Health (DPH) began operating a laboratory for drug testing on
    the campus of the University of Massachusetts at Amherst.      The
    State police took over operation of the lab in July, 2012, and
    oversaw the lab until its closure on January 18, 2013.      The
    Amherst lab served as a satellite laboratory for DPH's William
    A. Hinton State Laboratory Institute (Hinton lab), which was
    located in the Jamaica Plain area of Boston.    By 1987, the
    Amherst lab's primary function was the analysis of suspected
    controlled substances submitted by law enforcement agencies in
    western Massachusetts.
    4 We acknowledge the amicus briefs submitted by the Boston
    Bar Association; the Cato Institute and the Center on the
    Administration of Criminal Law; The Innocence Project, Inc., and
    the New England Innocence Project; Legal Ethics and Criminal
    Justice Scholars and the DKT Liberty Project; and Steven
    Fitzgerald.
    10
    From at least 2008 until the closure of the Amherst lab,
    four employees were assigned to it.    These were chemists Farak
    and Rebecca Pontes; supervisor James Hanchett; and evidence
    officer Sharon Salem.    The Amherst lab was "more laid back [than
    the Hinton lab]," and had "basically . . . no oversight."      Farak
    and Pontes, for example, occasionally would assign evidence
    samples if the evidence officer was not in the office, and every
    employee had unfettered access to drug standards, police-
    submitted samples, and the computer inventory system.       Between
    2006 and July, 2012, officials from DPH visited the Amherst lab
    only once or twice.
    2.     Farak's employment.   Farak was hired in May, 2003, as a
    Chemist I at the Hinton lab; she transferred to the Amherst lab
    in August, 2004.    Farak worked as a chemist at the Amherst lab
    until the lab closed on January 18, 2013.     The supervisor who
    preceded Hanchett indicated on Farak's annual personnel reviews
    from 2004 to 2008 that she was a thorough analyst with high
    output, who met or exceeded expectations in all performance
    criteria.   In June, 2005, DPH promoted Farak to Chemist II, and
    she was assigned additional responsibilities, including testing
    larger and more complex samples and repairing equipment.
    Hanchett assumed supervision of the Amherst lab in June, 2008,
    and discontinued the practice of conducting annual performance
    reviews.    He and Farak's other coworkers believed that,
    11
    throughout most of her employment, Farak was an excellent,
    meticulous chemist.
    3.   Misuse of lab samples.   Farak began using alcohol and
    marijuana regularly around the year 2000, while she was in her
    first year of a Ph.D. program.     She occasionally experimented
    with other drugs, including cocaine, methylenedioxy
    methamphetamine (also known as "MDMA" or "Ecstasy"), and heroin.
    At some point in late 2004 or early 2005, after
    transferring to the Amherst lab, Farak discovered a large bottle
    of methamphetamine oil in the unlocked refrigerator that held as
    many as fifty standards.5   She used a pipette to remove some of
    the methamphetamine from the bottle and squirted it into her
    mouth.    The methamphetamine gave her increased energy and
    alertness, providing "the pep [she had] been looking for."     She
    later testified that she "felt amazing" when using
    5 As used in a drug laboratory, a "standard" is a known
    controlled substance (e.g., cocaine or heroin) against which an
    unknown sample submitted by a law enforcement officer is
    compared to determine its identity. Using a gas
    chromatographer/mass spectrometer, a chemist compares the mass
    spectral patterns of the tested sample and the standard to
    determine if there is a match.
    Two types of standards are used in this testing. "Primary"
    standards are pure drug samples acquired from pharmaceutical
    companies, and are considered much the better practice.
    "Secondary" standards are manufactured in a laboratory from
    police-submitted samples that tested positive for a controlled
    substance, and were purified to remove any adulterants. Due to
    budget constraints, the Amherst lab regularly used secondary
    standards until July, 2012, when the State police assumed
    control of the lab.
    12
    methamphetamine.     Within a short period of time, Farak was
    stealing and consuming portions of the methamphetamine standard
    every morning.    By 2009, her consumption had increased to
    several times per day.     She was under the influence of
    methamphetamine much of the time she was at work, including days
    when she testified in court.
    By the end of 2008 or early 2009, Farak had almost
    completely exhausted the methamphetamine standard.     Around the
    same time, Hanchett was planning to conduct an audit of the lab;
    Farak became "slightly paranoid" that he would notice that the
    amount of methamphetamine oil in the jar had decreased
    substantially.    To avoid this eventuality, she added water to
    the jar.   Thereafter, Farak began searching for other standards
    to use.    She discovered a "large jar" of amphetamine and "a
    couple smaller containers of phentermine," and she began to
    consume these drugs.     Additionally, throughout 2009, Farak also
    stole from the lab standards for ketamine, MDMA, methylenedioxy
    ethylamphetamine (MDEA), lysergic acid diethylamide (LSD), and
    cocaine.
    In early 2009, Farak also began substance abuse
    counselling.     At first, she declined to answer questions about
    her drug use.    On April 28, 2009, she admitted to her therapist
    that she had been using illegal drugs for a long period of time,
    and that she "obtain[ed] the drugs from her job at the [S]tate
    13
    drug lab, by taking portions of samples that [had] come in to be
    tested."   Farak explained that she initially had begun by taking
    relatively small amounts from police-submitted samples that fell
    within the "acceptable loss" of approximately five per cent that
    ordinarily could be depleted due to testing and evaporation in
    storage.   On August 25, 2009, Farak told her therapist that she
    was "almost out" of her drug supply.
    Farak later explained to her therapist that, in late 2009,
    she had stolen cocaine from a large batch of samples submitted
    by inspectors for the United States Postal Service, and
    maintained that that was the first time she had tampered with a
    submitted sample.   She recalled the sample clearly because of
    its size and its source, but also because that had been the
    first time that she had crossed a line into a new level of lab
    misconduct.   According to Farak, "taking from . . . evidence
    [was] a whole []other level of morality [she] never thought
    [she] would cross and [she] did and it scared [her]."
    In 2011, Farak's cocaine use increased at the same time
    that she used up lab standards; in response, she turned to
    police-submitted samples of powder and "crack" cocaine.   By the
    end of 2011, Farak was "totally controlled by [her] addiction."
    Throughout 2012, she was smoking crack cocaine ten to twelve
    times per day, both when she was at work and at home and while
    driving.   Farak smoked crack cocaine in the bathroom of the lab,
    14
    at her lab bench when no one else was around, in the evidence
    room, and in the lab's fume hood so that she could "get rid
    of . . . the smoke directly."6
    To hide her burgeoning drug use from her colleagues, Farak
    began to counterfeit crack cocaine using a variety of
    substances, including rocks, soap chips, candle wax, and
    modeling clay, and to manipulate the inventory list on the
    evidence computer.    By the end of 2011, Farak routinely
    manipulated the computer system to assign herself the samples
    that she wanted.     If she skimmed from a sample before it was
    assigned to anyone, she altered the gross weight on the drug
    receipt so that the chemist who tested the sample would not
    notice; following analysis, she changed the weight back to the
    original amount so that the investigating officers would be
    unaware of the tampering.     Farak also lowered the temperature on
    the heat sealers, so that samples brought in unsealed could not
    be sealed properly, thereby allowing her easier access without
    noticeable tampering.
    In one illustrative case, Farak removed "a good hundred
    grams" from a kilogram of cocaine that had been submitted by the
    Chicopee police department.     Unsure whether the missing one
    hundred grams would be noticed, Farak replaced the missing
    6 When crack cocaine was not readily available, Farak
    manufactured it at her work station, using powder cocaine.
    15
    volume with a mixture of baking powder and baking soda.     On
    another occasion, she removed 200 grams of powder cocaine from a
    Holyoke case and took the drugs home to cook into crack cocaine.
    Judge Carey noted that Farak testified at the grand jury
    that "she began taking other chemists' samples in the summer of
    2012."   Farak testified that she took approximately six of
    Hanchett's samples of crack cocaine from his work station.
    These samples included "3.5 grams submitted by the Northampton
    Police Department, and a 24.5 gram sample from the Pittsfield
    Police Department."   Farak replaced the crack cocaine with
    counterfeit substances and placed the samples in bags that
    Hanchett had pre-initialed to save time.   Farak testified that,
    on another occasion, she took thirty grams of cocaine from a
    seventy-three-gram Springfield police department submission that
    had been assigned to Pontes.   She used it to manufacture crack
    cocaine, and replaced the missing cocaine with a filler
    substance.
    After the State police assumed control of the Amherst lab
    in July, 2012, their quality assurance team instructed Hanchett
    to inventory the lab standards.   At that point, Hanchett noticed
    that the standards were more depleted than he had expected, and
    mentioned that observation to Salem, Pontes, and Farak.   In
    September or October, 2012, Hanchett noticed that Farak's
    productivity had dropped, and he encouraged her to focus on her
    16
    work.    Aside from this single comment by Hanchett, and despite
    Farak's almost daily drug use starting in 2004, her coworkers
    did not question her work.    State police team members who met
    with Farak also did not notice that she was under the influence
    of drugs.
    4.   Farak's arrest.   On January 17, 2013, Salem was
    matching drug certificates to corresponding samples and noticed
    that two samples were missing.    She determined that both samples
    had been assigned to Farak, who had identified them as cocaine.
    The next morning, Salem told Hanchett about the missing samples.
    Hanchett searched the lab and discovered at Farak's work station
    an envelope containing the cut-open packaging for the missing
    samples, as well as materials Farak used as fillers to create
    counterfeit drugs.   The substances in the packaging tested
    negative for cocaine.   Hanchett notified the lab director, State
    police Major James Connolly, who instructed Hanchett to close
    the lab immediately.7   State police officers then alerted the
    office of the Attorney General.
    On the morning of January 18, 2013, Farak was expected to
    testify in a case in which she had issued a drug certificate.
    7 Hanchett's discovery took place four months after Annie
    Dookhan, a former chemist at the Hinton lab, had been arrested
    for evidence tampering and obstruction of justice. See
    Commonwealth v. Scott, 
    467 Mass. 336
    , 337, 339 (2014). By that
    time, the Hinton lab had been closed due to Dookhan's
    misconduct. See 
    id. at 342.
                                                                        17
    Two State police detectives located her at the court house and
    interviewed her.     Following the interview, Farak refused to
    consent to a search of her vehicle; the vehicle was seized and
    towed to the garage at the State police barracks.
    On January 19, 2013, Farak was arrested on charges of
    tampering with evidence, possession of cocaine, and possession
    of heroin.    On the same day, a clerk-magistrate issued a warrant
    to search Farak's vehicle.     Detective Lieutenant Robert Irwin,
    Sergeant Joseph Ballou, and Trooper Randy Thomas, who were
    assigned to the Attorney General's office, executed the search
    warrant; a crime scene services officer photographed the vehicle
    and the evidence found within it.     Among other things, the
    officers discovered bags containing pills, a white powdery
    substance that resembled cocaine, a brown tar-like substance
    that resembled heroin, and crack cocaine.     The vehicle also
    contained empty evidence bags marked with Hanchett's initials,
    and a sheet of paper that bore repeated written instances of
    Pontes's initials.     In addition, there were multiple manila
    envelopes containing hundreds of pages marked with case numbers,
    some dating back to 2008.     Given time restraints and the sheer
    volume of documents, the initial search warrant return listed
    the folders and documents as "assorted lab paperwork"; the
    officers intended to examine the evidence more closely at a
    later time.
    18
    On January 25, 2013, investigators also executed a search
    warrant for Farak's duffel bag, which was found at the Amherst
    lab, and discovered substances that could be used to create
    counterfeit cocaine, including soap, baking soda, candle wax,
    off-white flakes, and modeling clay, as well as plastic lab
    dishes, wax paper, and fragments of a crack cocaine pipe.     In
    addition, they found empty evidence bags that had been cut open;
    one bag was labeled with Pontes's initials, and two were labeled
    with Farak's initials.   On January 28, 2013, State police
    searched Farak's work station and found a vial of white powder
    that tested positive for oxycodone; they also found 11.7 grams
    of cocaine in one of her desk drawers.
    Assistant Attorney General Anne Kaczmarek was assigned to
    prosecute the case against Farak.   As with the Attorney
    General's investigation and prosecution of former DPH chemist
    Annie Dookhan, the Attorney General's office agreed to provide
    the district attorneys with information as the case unfolded.
    The district attorneys, in turn, were required to provide any
    such discovery to defendants whose convictions were called into
    question by Farak's misconduct.
    5.   Attorney General's investigation.   The Attorney
    General's office initially assumed that Farak's misconduct had
    been limited to the six-month period of time immediately
    preceding her arrest, and had consisted of stealing cocaine
    19
    samples for her own use, because of her addiction.   An inventory
    conducted at the time of Farak's arrest revealed only four
    missing samples, whereas an inventory that had been conducted
    four months earlier had not uncovered any missing samples.
    Judge Carey found that the "assumption [concerning the time
    frame of the misuse] was at odds with the evidence uncovered
    even at that early juncture."   By the end of January, 2013, the
    evidence indicated that "(1) Farak was addicted to and had
    stolen from the lab cocaine, phentermine, oxycodone[,] and
    possibly heroin; (2) her misconduct occurred as early as 2011;
    and (3) she may have tampered with samples assigned to Pontes
    and Hanchett, as she inexplicably had [evidence] bags with their
    initials on them."
    On January 23, 2013, Ballou received information from the
    district attorney for the Hampden district concerning two cases
    in which Farak had tested samples and the district attorney
    later had discovered inconsistencies.   In one case, a
    Springfield narcotics officer indicated that he had submitted
    for analysis fifty-one pills that resembled oxycodone; when he
    retrieved the sample after testing, it contained sixty-one pills
    with a different color and different markings.   Farak, who
    signed the drug certificate, had indicated on the certificate
    that the sample contained no illegal substances.   In the other
    case, Farak certified the weight of a sample of cocaine as four
    20
    grams less than the weight recorded by police after it had been
    seized.   When Ballou brought these cases to Kaczmarek's
    attention, she dismissed the importance of the missing
    prescription pills by stating, "Please don't let this get more
    complicated than we thought.   If she were suffering from back
    injury -- maybe she took some oxys?"
    Upon further review of the documents found in Farak's
    vehicle, Ballou discovered that the "assorted lab paperwork"
    contained mental health records.   These records were significant
    because they "(1) disclosed Farak's admission of drug use and
    theft of police-submitted samples while she was working at the
    lab; (2) supported inferences that Farak's misconduct occurred
    as early as 2011; and (3) revealed that Farak was receiving
    treatment for drug addiction and that her treatment providers
    likely would have more information about the scope of Farak's
    drug use and theft at the lab."
    On February 14, 2013, Ballou sent an electronic mail
    message titled "FARAK Admissions" to Kaczmarek, Irwin, and John
    Verner, who was then chief of the criminal bureau for the office
    of the Attorney General.   The text of the message provided,
    "Here are those forms with the admissions of drug use I was
    talking about.   There are also news articles with handwritten
    comments about other officials being caught with drugs.    All of
    these were found in her car inside of the lab manila envelopes."
    21
    Ballou attached the documents he had found to his message.       Both
    Kaczmarek and Verner were aware of the admissions before
    receiving Ballou's message.
    In preparation for grand jury proceedings, Kaczmarek
    drafted a prosecution memorandum that referenced the mental
    health records, with a footnote stating, "These [records] were
    not submitted to the grand jury out of an abundance of caution,
    in order to protect possibly privileged information."    The
    memorandum noted that the Attorney General's office was not
    certain of the scope of Farak's misconduct, and that staff were
    "hoping that the defendant, once indicted, [would] detail how
    long she had been abusing drugs and how many cases are
    affected."    Verner and Dean Mazzone, then senior trial counsel
    for the criminal bureau, each reviewed and approved the
    memorandum.    Verner wrote a comment near the footnote noting
    that the mental health records had "not [been] turned over to
    [the district attorney's] [o]ffice yet."
    On April 1, 2013, a grand jury returned indictments
    charging Farak with four counts of evidence tampering, four
    counts of theft of a controlled substance, and two counts of
    unlawful possession of cocaine.   When Farak was arraigned on
    April 22, 2013, Kaczmarek provided her defense attorney with the
    entire file, including the mental health records.    Later,
    Kaczmarek told Farak's attorney that the Attorney General's
    22
    office considered the mental health records to be privileged
    and, therefore, would not turn them over to defendants
    challenging their convictions on the ground of Farak's
    misconduct.
    Kaczmarek sent an electronic mail message to Farak's
    attorney on September 10, 2013, asking if Farak would be willing
    to make a proffer to determine the scope of the misconduct.      The
    attorney responded that Farak would cooperate if she were to
    receive a sentence of probation and immunity for additional
    State and Federal charges.   The Attorney General's office
    declined to accept the offer.   On January 6, 2014, Farak pleaded
    guilty to all of the charges.
    6.   Amherst lab defendants.   While the Attorney General's
    office focused on prosecuting Farak, defendants whose drug
    certificates had been signed by Farak began to file motions for
    discovery and postconviction relief.   On July 25, 2013, then
    Superior Court Judge C. Jeffrey Kinder consolidated sixteen
    postconviction claims, involving fifteen defendants.     He
    conducted an evidentiary hearing on the consolidated cases over
    three days in September and October of 2013.     Another defendant,
    who had filed a motion to dismiss as part of his pretrial
    proceedings, also participated in the hearing.    Judge Kinder
    limited the hearing to information concerning (1) the timing and
    scope of Farak's misconduct; (2) the State police's quality
    23
    assurance audit from October, 2012; and (3) how Farak's
    misconduct and the conditions at the Amherst lab might have had
    an impact on the results of drug analyses the lab produced.
    Judge Kinder also designated two attorneys as lead counsel for
    the defendants.
    From August through October, 2013, numerous defendants
    served subpoenas duces tecum on Ballou and Kaczmarek and filed
    motions in the Superior Court seeking to inspect the evidence
    seized from Farak's vehicle.     They also sought disclosure of the
    Attorney General's office correspondence relating to the scope
    of Farak's misconduct and any indication that a third party had
    had knowledge of Farak's behavior prior to her arrest.
    Assistant Attorney General Kris Foster, a member of the appeals
    division of the criminal bureau, was assigned to respond to the
    subpoenas and motions.
    a.   Subpoenas.   After communicating with her superiors,
    Foster filed motions to quash the subpoenas.     She argued that
    the Attorney General's office already had turned over all
    nonprivileged information.     In the alternative, Foster asked the
    court to restrict the scope of the subpoenas by allowing the
    government not to produce documents that contained the criminal
    history of any individual, legal work product, or "[i]nformation
    concerning the health or medical or psychological treatment of
    individuals."   Although internal policies for responding to
    24
    subpoenas indicated that a review of the file should be the
    first step in responding to a request for a subpoena, and a
    supervisor urged her to confirm the accuracy and truth of her
    representations about the contents of the file, Foster did not
    personally review Ballou's file.
    On September 9, 2013, Judge Kinder denied the motion to
    quash the Ballou subpoenas insofar as the documents related to
    Ballou's testimony at the evidentiary hearing.   When he inquired
    of Foster concerning the Attorney General's office's request for
    a protective order, she explained that she had not personally
    reviewed the file and that neither she nor Ballou had brought
    the file to the hearing.   Judge Kinder instructed Foster to
    examine Ballou's file by September 18, 2013, and to present to
    him for in camera review on that date any material the Attorney
    General's office believed was privileged.   In electronic mail
    messages among Foster, Kaczmarek, and Verner discussing the
    hearing, Kaczmarek indicated that Ballou's file contained the
    news articles and mental health records seized from Farak's
    vehicle.
    On September 16, 2013, Foster sent Judge Kinder a letter
    stating, "After reviewing Sergeant Ballou's file, every document
    in his possession has been disclosed.   This includes grand jury
    minutes and exhibits, and police reports.   Therefore, there is
    nothing for the Attorney General's office to produce for your
    25
    review on September 18, 2013."    At that point, however, Foster
    had yet to review Ballou's file, and she intentionally had used
    the passive phrase "after review" so that she would not directly
    misrepresent to Judge Kinder that she had personally examined
    the file.   At a subsequent hearing on October 2, 2013, Foster
    again represented to Judge Kinder that the entire contents of
    Ballou's file had been disclosed.
    b.   Motions to inspect.     Within the same time frame, one of
    the appointed defense counsel, Luke Ryan, asked the Attorney
    General's office for permission to inspect the documents; as the
    investigation was still ongoing, Kaczmarek refused.     Kaczmarek
    again rejected Ryan's efforts to examine the documents after
    Ryan received permission from Hampden County Assistant District
    Attorney Frank Flannery, who was in charge of the protocol for
    handling the Amherst lab defendants' cases.     At the hearing on
    September 9, 2013, Ryan asked Judge Kinder for an order allowing
    him access to the documents.     Judge Kinder told Ryan that he
    could file a motion for access if he were unable to make
    arrangements with the Attorney General's office.     Over the next
    few days, Ryan sent Foster electronic mail messages asking for
    permission to review the documents.    Kaczmarek told Foster not
    to allow these requests, because the documents were not relevant
    to Ryan's case.
    26
    Ryan then filed a motion to inspect, pursuant to Mass. R.
    Crim. P. 17 (a) (2), 
    378 Mass. 885
    (1979).     At a hearing on the
    motion on October 2, 2013, Foster told Judge Kinder that the
    documents sought were not relevant, and that the Commonwealth
    would be prejudiced by the number of defendants who would seek
    to review them.   Concluding that he was "not persuaded that Rule
    17 (a) (2) permits a third-party to inspect evidence held in a
    pending criminal case . . . [p]articularly under the
    circumstances of this case where the physical evidence has been
    described in detail for the defendant and photographs of that
    evidence have been provided," Judge Kinder denied the motion to
    inspect.
    c.     Motions to compel.   A different defendant filed a
    motion to compel production by the Attorney General's office of
    "copies of all inter and intra-office correspondence from
    1/18/13 to present pertaining to the scope of evidence tampering
    and/or deficiencies at the Amherst drug lab."    Foster asserted
    in response that such correspondence was protected by the work
    product doctrine.   At the hearing on October 2, 2013, Foster
    told Judge Kinder that she had not personally examined the
    correspondence, and she agreed that the requested information
    would be exculpatory if it existed.     Judge Kinder allowed the
    motion to compel.   The Attorney General's office then filed a
    motion for clarification and requested that privileged work
    27
    product and material related to an ongoing investigation be
    excluded; Judge Kinder allowed that motion, and limited the
    scope of his earlier motion as the office of the Attorney
    General had requested.
    Another motion to compel, filed by a different defendant,
    requested "any and all evidence suggesting that a third party
    may have been aware of Farak's evidence tampering at the Amherst
    lab prior to Farak's arrest in January 2013."     Although the
    mental health records were responsive to this discovery motion,
    Foster again responded that the Attorney General's office had
    turned over all materials, and claimed that "there [was] no
    reason to believe that a third-party had knowledge of Farak's
    alleged malfeasance prior to her arrest."     Had the documents
    been produced, they would have revealed that Farak's mental
    health care providers knew of her evidence tampering as early as
    2011.   Judge Kinder denied the motion.
    d.   Judge Kinder's findings.    Relying on representations
    made by the Attorney General's office, Judge Kinder concluded
    that Farak's misconduct began in July, 2012, and ended with her
    arrest in January, 2013.   He found that although Farak had been
    an agent of the Commonwealth, there was insufficient evidence
    that her misconduct began earlier than July, 2012, and that any
    other deficiencies at the Amherst lab did not have an impact on
    the reliability of her testing.     As a result, Judge Kinder
    28
    denied the motions for postconviction relief by defendants who
    had pleaded guilty before the summer of 2012; he also denied the
    motion to dismiss filed by the defendant who was still in the
    pretrial phase.   Defendants whose motions were denied, and other
    defendants who had not been part of the hearings before Judge
    Kinder but who had filed motions which subsequently were denied
    on the basis of his rulings, appealed.   See 
    Cotto, 471 Mass. at 99
    ; 
    Ware, 471 Mass. at 91-92
    .
    7.   Discovery of the mental health records.   In
    March, 2014, following Farak's guilty plea, an Amherst lab
    defendant filed a motion to inspect the evidence from Farak's
    criminal case.    Ryan sent an electronic mail message to Foster
    on June 23, 2014, on behalf of another defendant, asking for
    permission to view that evidence; the message was unanswered.
    On July 21, 2014, that defendant filed a motion for an order to
    allow Ryan to inspect the evidence.    The motion was allowed on
    July 31, 2014.
    On October 30, 2014, Ryan reviewed the evidence and
    discovered multiple documents that had not been disclosed
    previously, including the mental health records.   On November 1,
    2014, Ryan sent a letter titled "Newly Discovered Evidence" to
    Assistant Attorney General Patrick Devlin, who had helped to
    arrange the inspection.   Ryan indicated that he had discovered
    proof that Farak had been abusing drugs since at least 2011, in
    29
    contrast to Judge Kinder's findings, which were based on the
    Attorney General's office's representations that Farak's drug
    abuse and tampering with Amherst lab samples began in July of
    2012.   Ryan indicated that "[i]t would be difficult to overstate
    the significance of these documents."     He asked Devlin to allow
    him to provide the mental health records to another attorney and
    to other defendants who had sought postconviction relief based
    on Farak's misconduct.
    On November 5, 2014, Foster sent an electronic mail message
    to Devlin, requesting a copy of the mental health records, which
    she had never seen.    In a letter dated November 13, 2014, the
    Attorney General's office notified the district attorneys that
    it was sending 289 pages of documentary evidence that had not
    been turned over previously, including the mental health
    records.
    8.    Decisions in Cotto and Ware.   In December, 2014, this
    court received filings from two defendants whose appeals from
    the denials of their motions for postconviction relief were then
    pending.   See 
    Cotto, 471 Mass. at 97
    ; 
    Ware, 471 Mass. at 85
    .
    The defendant in 
    Cotto, supra
    at 99, directly appealed from
    Judge Kinder's ruling, and sought to withdraw the defendant's
    guilty pleas.   He claimed that Farak's misconduct predated his
    guilty pleas in April, 2009, and that he would not have pleaded
    guilty if he had been aware of the misconduct.    
    Id. at 98-99.
                                                                      30
    The defendant in Ware, supra at 90-92, sought postconviction
    discovery and retesting of suspect drug samples; he argued that
    allowance of his discovery request would be "reasonably likely
    to uncover evidence that might warrant granting [him] a new
    trial."   In addition, he questioned the thoroughness of the
    investigation by the Attorney General's office into the scope of
    Farak's misconduct.     See 
    id. at 92.
    On the basis of Judge Kinder's findings, and the eight
    cases of tampering that had surfaced at that point, we
    determined that "the scope of Farak's misconduct [did] not
    appear to be . . . comparable to the enormity of Dookhan's
    misconduct."   See 
    Cotto, 471 Mass. at 111
    .   We therefore
    declined to extend the conclusive presumption of egregious
    government misconduct that was applicable in cases affected by
    Dookhan's misconduct.    See 
    id., citing Commonwealth
    v. Scott,
    
    467 Mass. 336
    , 352-353 (2014).    We noted, however, "the
    Commonwealth's failure to thoroughly investigate the matter of
    Farak's misconduct," see 
    Cotto, supra
    at 99, and indicated that
    it was "imperative that the Commonwealth thoroughly investigate
    the timing and scope of Farak's misconduct at the Amherst drug
    lab in order to remove the cloud that has been cast over the
    integrity of the work performed at that facility, which has
    serious implications for the entire criminal justice system."
    
    Id. at 115.
       See 
    Ware, 471 Mass. at 96
    .   We allowed the
    31
    Commonwealth one month to decide whether to undertake an
    investigation.   
    Cotto, supra
    .   In June, 2015, the Attorney
    General's office notified the Superior Court in Hampden County
    that it would do so.
    9.   Velis and Caldwell Reports.    Following this court's
    remand and prior to the hearing before Judge Carey, the Attorney
    General's office conducted its own investigation of the
    situation at the Amherst lab.    In June, 2015, the Attorney
    General appointed retired Judge Peter A. Velis as a special
    assistant attorney general and independent investigator to work
    with Assistant Attorney General Thomas A. Caldwell.    In August,
    2015, the district attorney for the northwestern district
    separately appointed retired Judge Thomas T. Merrigan as a
    special assistant district attorney and independent investigator
    for the northwestern district.    The two judges then consolidated
    their investigation, which was focused on issues raised by Ryan.
    Two State police investigators were assigned to assist the
    judges with the investigation of allegations of misconduct by
    State police officers and prosecutors assigned to the office of
    the Attorney General.
    In September, 2015, the Attorney General's office also
    undertook to examine the scope of Farak's misconduct and
    initiated two grand jury investigations, in Hampshire and
    Suffolk Counties, to hear evidence.    Caldwell was assigned to
    32
    conduct the investigations.   Farak testified before the
    Hampshire County grand jury, over three days, concerning her
    extensive drug use, theft of standards and police-submitted
    samples, tampering with other chemists' samples, and
    manufacturing of crack cocaine at her workbench.8
    In November, 2015, Hanchett, Salem, and Pontes testified
    before the Suffolk County grand jury concerning conditions at
    the Amherst lab and their interactions with Farak.     The Attorney
    General's office also reviewed and introduced more than 4,700
    electronic mail messages that Caldwell had obtained from
    multiple sources; the Amherst lab records; and Farak's bank
    records, telephone records, and communications while being held
    in a house of correction awaiting trial.
    On March 31, 2016, Judges Velis and Merrigan issued a
    report which concluded,
    "After our thorough review of the investigative
    activities and their recommendations, we agree that there
    is no evidence of prosecutorial misconduct or obstruction
    of justice by the Assistant Attorney[s] General[] and
    [State police] officers in matters related to the Farak
    case."
    On April 1, 2016, Caldwell submitted his completed report
    (Caldwell Report) to Judge Carey, who had been assigned to the
    matter after Judge Kinder was appointed to the Appeals Court.
    8 In September, 2015, after she had pleaded guilty to
    tampering charges, Farak testified before the grand jury under a
    grant of immunity for any additional charges, concerning the
    timing and scope of her misconduct.
    33
    The report summarized the information learned from the grand
    jury investigations, and provided no recommendation on how to
    proceed; the report concluded that "[t]he results of the
    Commonwealth's investigation are now provided to the Court so
    that the Court can determine how to proceed in the matters
    before it" (footnote omitted).
    10.   Carey hearing.   In 2015, ten defendants who had been
    convicted of drug offenses between May, 2006, and
    September, 2014, based on substances that had been tested at the
    Amherst lab filed renewed motions to dismiss, to withdraw guilty
    pleas, or for new trials.     They asserted that they should be
    awarded postconviction relief based on Farak's tampering; the
    failure of the office of the Attorney General to disclose
    exculpatory evidence and to conduct an adequate investigation in
    2013 on the nature and extent of Farak's misconduct; and
    inadequate conditions, policies, and procedures at the Amherst
    lab.    The cases were consolidated and assigned to Judge Carey on
    December 7, 2015.
    In December, 2016, Judge Carey conducted an evidentiary
    hearing over six days at which Kaczmarek, Foster, Verner,
    Mazzone, Ravitz, and Reardon testified.      Edward Bedrosian
    (former first assistant attorney general), and Sheila Calkins
    (former deputy attorney general) also testified.     In addition,
    Judge Carey heard testimony from Ballou, Irwin, and Thomas of
    34
    the State police; Flannery; Farak's attorney; former Amherst lab
    employees Hanchett, Salem, and Pontes; Timothy Woods, an
    employee of the State police crime laboratory in Sudbury, who
    conducted some retesting of substances that originally had been
    tested at the Amherst lab; and two laboratory quality experts,
    Robert Powers and Heather Harris.   Although Farak did not
    testify, Judge Carey reviewed her grand jury testimony from the
    investigation by the office of the Attorney General.   Judge
    Carey considered Farak's grand jury testimony to be "generally
    candid," but he did not credit her testimony regarding the
    reliability of her analysis or the extent of her addiction and
    her use of police-submitted samples, given the evidence that she
    had lied to her therapist in order to downplay her substance
    abuse.   He did, however, credit other aspects of her testimony,
    including her statement that she had not succeeded in forging
    Hanchett's or Pontes's initials on evidence bags.
    On June 26, 2017, Judge Carey released a memorandum of
    decision in which he found that (i)   Farak's misconduct,
    beginning in 2004, "created a problem of systemic magnitude";
    (ii) Foster and Kaczmarek exhibited "reprehensible" misconduct
    in continually withholding the mental health records and
    misleading Judge Kinder in a manner that constituted a fraud
    upon the court; and (iii) there was "no evidence that a
    comprehensive, adequate, or even reasonable investigation by any
    35
    office or agent of the Commonwealth had been attempted,
    concluded, or disclosed prior to issuance of the Caldwell
    Report."   Judge Carey determined that evidence of deficiencies
    at the Amherst lab was not a sufficient basis for postconviction
    relief, but that the egregious misconduct by Farak, Foster, and
    Kaczmarek irreparably harmed some defendants.
    Judge Carey did not call into question, however, any of the
    analysis performed by the other Amherst lab employees; he
    concluded that any postanalysis tampering by Farak did not have
    a negative impact on the defendants and thus did not justify
    postconviction relief.   He determined also that the misconduct
    by the office of the Attorney General was limited to Foster and
    Kaczmarek, whose "intentional and deceptive actions ensured that
    justice would certainly be delayed, if not outright
    denied, . . . violat[ing] their oaths as assistant attorneys
    general and officers of the court."
    The judge therefore concluded that, "at least with respect
    to selected drug lab defendants, the deliberate misconduct [of
    Kaczmarek and Foster] was so egregious that presumptive
    prejudice arises, so that dismissal with prejudice is the
    appropriate prophylactic remedy to deter similar future
    misconduct."   He limited the class of defendants entitled to
    dismissal with prejudice to cases where (i) Farak had signed the
    drug certificate; (ii) the defendants' had sought postconviction
    36
    relief or discovery between January 19, 2013, and November 1,
    2014, and their efforts had been unsuccessful; and (iii) the
    defendants' motions had been denied because of the misleading
    evidentiary record presented to Judge Kinder.    Judge Carey
    indicated that the cases where defendants had filed motions to
    withdraw guilty pleas would require a more individualized
    factual inquiry to determine whether the defendant would have
    acted differently if he or she had known of Farak's misconduct
    at the time of the plea.9
    11.   Subsequent proceedings.   In September, 2017, the
    petitioners filed a petition pursuant to G. L. c. 211, § 3, and
    G. L. c. 231A, § 1, in the county court, seeking relief based on
    Judge Carey's decision.     Specifically, the petitioners requested
    dismissal with prejudice of all convictions "tainted by the
    Commonwealth's misconduct."    They also asked the single justice
    to order the Commonwealth "to comply with its legal and ethical
    obligations to respond to this lab scandal and any future
    systemic crises."
    Following a hearing on October 31, 2017, the single justice
    issued an order on November 2, 2017, requiring the parties to
    identify any cases in which there was agreement to vacate the
    convictions and to dismiss the matters with prejudice.    The
    9 The respondents do not contest Judge Carey's factual
    findings.
    37
    district attorneys agreed to vacate more than 8,000 convictions
    of individuals whom they classified as "Farak defendants," and
    to dismiss those charges with prejudice.   According to the
    district attorneys, the definition of "Farak defendants"
    included any "defendants who pleaded guilty to a drug charge,
    admitted to sufficient facts to warrant a finding of guilty on a
    drug charge, or were found guilty of a drug charge in any case
    in which Farak signed a drug certificate as an analyst between
    August, 2004[,] and January, 2013, while she was employed at the
    [Amherst lab], except for the so-called 'Ruffin defendants.'"10
    At that point, there were approximately forty-five cases from
    Berkshire and Bristol Counties that the district attorneys had
    not agreed to dismiss; those cases subsequently have been
    dismissed.
    On January 26, 2018, the single justice reserved and
    reported the case to the full court, and ordered the parties to
    address three questions:
    "1. Whether the defendants in some or all of the
    'third letter' cases are entitled to have their convictions
    vacated, and the drug charges against them dismissed with
    prejudice, given the undisputed misconduct of the assistant
    Attorneys General found by Judge Carey in Commonwealth vs.
    Erick Cotto, Hampden Sup. Ct., No. 2007-770 (June 26, 2017)
    (memorandum and order on postconviction motions), and given
    the conduct of the District Attorneys that the petitioners
    allege was improper.
    10"Ruffin defendants" are individuals who pleaded guilty
    before receiving results of the drug analysis in their cases.
    See Commonwealth v. Ruffin, 
    475 Mass. 1003
    , 1004 (2016).
    38
    "2. Whether the definition of 'Farak defendants'
    being employed by the District Attorneys in this case is
    too narrow; specifically, based on the material in the
    record of this case, whether the appropriate definition of
    the class should be expanded to include all defendants who
    pleaded guilty to a drug charge, admitted to sufficient
    facts on a drug charge, or were found guilty of a drug
    charge, if the alleged drugs were tested at the Amherst
    Laboratory during Farak's employment there, regardless [of]
    whether Farak was the analyst or signed the certificates in
    their cases.
    "3. Whether, as the petitioners request, the record
    in this case supports the court's adoption of additional
    prophylactic measures to address future cases involving
    widespread prosecutorial misconduct, and whether the court
    would adopt any such measures in this case."
    On April 5, 2018, the single justice vacated and dismissed
    with prejudice all convictions that were identified by the
    district attorneys and the Attorney General on or before March
    30, 2018.
    Discussion.   We address each of the reported questions in
    turn.
    1.   "Third letter" cases.   The first reported question asks
    whether the defendants in "third letter" cases are entitled to
    have their convictions vacated and dismissed with prejudice due
    to prosecutorial misconduct.   Under the protocol established in
    Bridgeman II in response to Dookhan's misconduct, "third letter"
    cases are "cases that the District Attorneys intend to re-
    prosecute if motions for new trial are allowed, and that they
    represent can be prosecuted independently of any drug
    39
    certificate signed by Farak, or related testimony."   See
    Bridgeman 
    II, 476 Mass. at 328
    .
    As stated, when the single justice reserved and reported
    this case to the full court, there were approximately forty-five
    "third letter" cases from Berkshire and Bristol Counties in
    which Farak had signed the drug certificates and the district
    attorneys had not agreed to dismiss the convictions with
    prejudice.   Because those cases have now been dismissed, the
    first reported question is moot.   See Lawyers' Committee for
    Civil Rights & Economic Justice v. Court Administrator of the
    Trial Court, 
    478 Mass. 1010
    , 1011 (2017) (upholding single
    justice's dismissal of petition as moot where "no further
    effective relief [could] be granted").
    2.   Definition of "Farak defendants."   The second reported
    question asks whether the class of "Farak defendants" includes
    "all defendants who pleaded guilty to a drug charge, admitted to
    sufficient facts on a drug charge, or were found guilty of a
    drug charge, if the alleged drugs were tested at the Amherst
    Laboratory during Farak's employment there, regardless [of]
    whether Farak was the analyst or signed the certificates in
    their cases."
    a.   Bridgeman framework.   We confronted a similar challenge
    after the discovery of Dookhan's misconduct at the Hinton lab.
    The Dookhan petitioners twice asked this court to utilize its
    40
    superintendence authority to vacate and dismiss all Dookhan
    cases as a "global remedy."   See Bridgeman 
    II, 476 Mass. at 321
    –
    322; Bridgeman v. District Attorney for the Suffolk Dist., 
    471 Mass. 465
    , 487 (2015) (Bridgeman I).   The petitioners in those
    cases argued that "the time and expense of proceeding on a case-
    by-case basis [was] untenable," Bridgeman 
    I, supra
    , and that "a
    case-by-case adjudication of so many cases [was] 'doomed to
    fail' given the limited resources of the Commonwealth's indigent
    criminal defense system," so that "the only just and practical
    alternative . . . [was] the global remedy," Bridgeman I
    I, supra
    at 314, 322.   The district attorneys maintained that "individual
    case-by-case adjudication of motions for a new trial brought by
    Dookhan defendants [was] both practical and fair."   
    Id. at 315.
    In considering how best to balance the rights of defendants
    affected by governmental misconduct and society's interest in
    administering justice, we focused on four fundamental principles
    of our criminal justice system.   See Bridgeman 
    II, 476 Mass. at 315
    –318.   See also Bridgeman 
    I, 471 Mass. at 487
    , quoting 
    Scott, 467 Mass. at 352
    (declining to implement "global remedy," but
    fashioning procedure intended to "account for the due process
    rights of defendants, the integrity of the criminal justice
    system, the efficient administration of justice in responding to
    such potentially broad-ranging misconduct, and the myriad public
    interests at stake").
    41
    "First, where there is egregious misconduct attributable to
    the government in the investigation or prosecution of a criminal
    case, the government bears the burden of taking reasonable steps
    to remedy that misconduct."     Bridgeman 
    II, 476 Mass. at 315
    .    We
    similarly noted in 
    Cotto, 471 Mass. at 112
    , that "[t]he
    Commonwealth's obligation to conduct an investigation is
    premised on a prosecutor's duty to learn of and disclose to a
    defendant any exculpatory evidence that is held by agents of the
    prosecution team, who include chemists working in State drug
    laboratories. . . .    It is incumbent on the Commonwealth to
    perform this duty in a timely fashion.    The burden of
    ascertaining whether Farak's misconduct at the Amherst drug lab
    has created a problem of systemic proportions is not one that
    should be shouldered by defendants in drug cases."     (Quotations
    and citations omitted.)
    Second, "relief from a conviction generally requires the
    defendant to file a motion for a new trial."     See Bridgeman 
    II, 476 Mass. at 316
    .     Such a motion is usually required because,
    without it, "we cannot be sure that a defendant wishes to accept
    the risk that the Commonwealth will retry the defendant rather
    than issue a nolle prosequi."    
    Id. at 323.
      The "uncertainty and
    disruption inherent in being a defendant in a criminal trial"
    should not be forced on anyone who does not desire to be
    retried.   
    Id. 42 Third,
    "dismissal with prejudice 'is a remedy of last
    resort,'" but may be available in certain limited circumstances.
    
    Id. at 316,
    quoting Commonwealth v. Cronk, 
    396 Mass. 194
    , 198
    (1985).    "Two parallel legal principles" balance "the rights of
    defendants . . . against the necessity for preserving society's
    interest in the administration of justice."     Cronk, supra at
    198-199.   Under the first principle, "[w]here the prosecutor
    fails to disclose evidence the defendant is entitled to receive
    and the defendant is prejudiced by the failure to disclose, a
    motion to dismiss should not be allowed absent a showing of
    irremediable harm to the defendant's opportunity to obtain a
    fair trial."   
    Id. at 198.
      See Commonwealth v. Lam Hue To, 
    391 Mass. 301
    , 314 (1984) ("Such a drastic remedy would be
    appropriate where failure to comply with discovery procedures
    results in irremediable harm to a defendant that prevents the
    possibility of a fair trial").    Alternatively, "prosecutorial
    misconduct that is egregious, deliberate, and intentional, or
    that results in a violation of constitutional rights may give
    rise to presumptive prejudice . . . and the 'drastic remedy' of
    dismissal of charges may become an appropriate remedy."     See
    Cronk, supra at 198-199.     The latter theory should be narrowly
    applied, and confined to situations where the misconduct has
    "cast such doubt . . . as to poison the entire investigation,"
    Commonwealth v. Hine, 
    393 Mass. 564
    , 571 (1984), and a "stronger
    43
    deterrent" is warranted to prevent repetition of such
    misconduct.   See Bridgeman 
    II, 476 Mass. at 322
    ; Commonwealth v.
    Lewin, 
    405 Mass. 566
    , 587 (1989) ("The only reason to dismiss
    criminal charges because of nonprejudicial but egregious police
    misconduct would be to create a climate adverse to repetition of
    that misconduct that would not otherwise exist"); Commonwealth
    v. Manning, 
    373 Mass. 438
    , 444 (1977) ("The indictment itself is
    so inextricably interwoven with the misconduct which preceded it
    that the only appropriate remedy here is to dismiss the
    indictment").
    Finally, "where large numbers of persons have been wronged,
    the wrong must be remedied in a manner that is not only fair as
    a matter of justice, but also timely and practical."    Bridgeman
    
    II, 476 Mass. at 317
    .   "A remedy that is perfect in theory is
    not perfect in fact if it would take too long to be
    accomplished, or if the resources required to implement it would
    overwhelm the limited resources available to the courts."     
    Id. at 317-318.
    We stated in Bridgeman 
    II, 476 Mass. at 322
    -323, that
    "dismissal with prejudice for government misconduct is very
    strong medicine . . . [that] should be prescribed only when the
    government misconduct is so intentional and so egregious that a
    new trial is not an adequate remedy."   Noting that Dookhan's
    misconduct was not accompanied by misconduct by a prosecutor or
    44
    an investigator, we ultimately determined that the stronger
    deterrent of dismissal with prejudice was not required.        See 
    id. at 322.
       Accordingly, we established the Bridgeman II protocol
    to allow efficient case-by-case adjudication of the remaining
    cases affected by Dookhan's misconduct.      
    Id. at 326.
    b.    Appropriate remedy.   The petitioners argue that the
    very strong medicine of dismissal with prejudice is required
    here.     We agree.   The government misconduct by Farak and the
    assistant attorneys general was "so intentional and so
    egregious" that harsher sanctions than the Bridgeman II protocol
    are warranted.    See Bridgeman 
    II, 476 Mass. at 322
    .      Indeed,
    before the briefs were filed, the district attorneys had agreed
    to bypass the Bridgeman II protocol and to dismiss with
    prejudice all convictions based on drug certificates signed by
    Farak.
    It is difficult, however, to determine the appropriate
    scope of the dismissal remedy.     In 
    Cronk, 396 Mass. at 199
    , we
    cautioned that "[r]emedies for prosecutorial misconduct should
    be tailored to the injury suffered and should not unnecessarily
    infringe on competing interests."     See Commonwealth v. Carney,
    
    458 Mass. 418
    , 427 (2010) (sanctions "should be limited to truly
    remedial, and not punitive measures" [citation omitted]).        We
    therefore must determine whether the class of defendants whose
    cases are subject to dismissal with prejudice should include
    45
    individuals whose convictions rest upon samples tested at the
    Amherst lab by chemists other than Farak.
    The petitioners contend that all convictions based on drug
    samples tested at the Amherst lab during Farak's tenure should
    be vacated and dismissed with prejudice, regardless of whether
    Farak signed the drug certificate.     They argue that the precise
    scope of Farak's misconduct is "unknown (and at this point,
    unknowable)," because of the Commonwealth's failure to conduct a
    prompt and adequate investigation.11    They contend also that
    dismissals with prejudice are "the only appropriate remedy" for
    the egregious prosecutorial misconduct here, and that such
    dismissals are "a necessary prophylactic in response to the
    Commonwealth's transforming the courts into unwitting agents of
    injustice."
    The sweeping extent of this proposed remedy, however, is
    not supported by the record.   The only evidence of misconduct by
    Farak between 2004 and 2009 is her theft of the methamphetamine
    11The petitioners contend also that the Attorney General's
    office and the district attorneys deliberately impeded
    defendants' appellate rights by failing to inform defendants of
    the misconduct at the Amherst lab while the matter was being
    litigated. In our determination of the appropriate remedies, we
    have considered the full scope of the misconduct by the office
    of the Attorney General. We discern no fault, however, in any
    actions by the district attorneys and their offices. The
    district attorneys properly turned over the evidence they
    received to defendants whose convictions were called into
    question by Farak's misconduct, and engaged in time-consuming
    work promptly to identify and notify individuals whose cases
    were affected by Farak's misconduct.
    46
    oil standard.   There is no evidence to support a finding that
    Farak's consumption of portions of the methamphetamine standard
    affected other chemists' analyses of other controlled
    substances.   Accordingly, the complete dismissal with prejudice
    of all convictions based upon samples tested at the Amherst lab
    during Farak's employment is not a sufficiently tailored remedy.
    The district attorneys would limit the class of "Farak
    defendants" to the individuals whose convictions rested upon
    samples tested by Farak herself, precisely those individuals
    whose cases already have been vacated and dismissed with
    prejudice.    The district attorneys reach their recommendation on
    the basis of Judge Carey's findings that the integrity of the
    analyses by other chemists was "not in question," and that
    defendants who did not seek discovery or postconviction relief
    were not "material[ly] connect[ed]" to the Attorney General's
    office's egregious misconduct.
    It is undisputed that Farak tampered with other chemists'
    samples, both before and after they had been tested.    By 2011,
    Farak intentionally was manipulating information in the
    inventory list stored on the lab's computer to assign herself
    samples that involved drugs she wanted for her own use.    In
    order to avoid detection of her theft of drugs before they had
    been analyzed, she altered the gross weight on the drug receipt
    before another chemist tested the sample, and then changed the
    47
    weight back to the original number before law enforcement
    officers retrieved the samples after testing.    Farak admitted
    that, by the summer of 2012, she also was tampering with other
    chemists' samples after the samples had been tested, by cutting
    into sealed evidence bags to remove portions of the samples and
    then resealing the remainder in pre-initialed evidence bags that
    she had stolen from other chemists.    In addition, she regularly
    replaced stolen drugs with counterfeit substances.
    We must remedy these forms of evidence tampering and cannot
    limit relief only to those defendants where Farak signed the
    drug certificate.     Any interference with samples that calls into
    question the accuracy of the drug certificates or prevents later
    retesting of the original substance diminishes the reliability
    and integrity of the forensic testing at the Amherst lab, and
    also reduces public confidence in other drug certificates from
    other laboratories.    The district attorneys' proposal does not
    go far enough to protect the rights of defendants whose
    convictions rest upon samples that were tested at the Amherst
    lab during the period of Farak's misconduct.
    The appropriate remedy therefore lies between dismissing
    all cases relying on samples tested at the Amherst lab,
    regardless of the chemist who performed the analysis, and
    dismissing no cases where samples were tested by chemists other
    than Farak.   The Attorney General's office suggests that,
    48
    because Farak testified that she tampered with other chemists'
    samples in mid-June, 2012, any defendant whose conviction rests
    upon evidence tested at the Amherst lab by any chemist between
    June, 2012, and January, 2013, should be eligible to have the
    conviction vacated and dismissed pursuant to the Bridgeman II
    protocol.   Although the Attorney General's office believes that
    Farak tampered with only a small number of samples during that
    period, Farak herself was unable to identify which samples she
    had misused; the reliability of all samples tested during that
    time period therefore is compromised.
    Before the grand jury, Farak testified that her theft of
    other chemists' samples was limited to a few cases.   In response
    to a question from the assistant district attorney, "At any
    point . . . . did you ever manipulate or take samples from other
    chemists at the laboratory?" she responded, "Yes."    She then
    detailed a few specific instances of having removed amounts from
    other chemists' samples, and said that she would do so generally
    if she was able to obtain an open, signed plastic bag with other
    chemists' initials that the chemists used to reseal the samples
    after they had completed their testing.   She explained that she
    would try not to use others' samples unless she had no "other
    way" to obtain crack cocaine.
    "If it was either me taking from my own evidence I analyzed
    or other people's, I would definitely do my own. That was
    one of the lines I had thought I would never cross. I
    49
    wouldn't tamper with evidence, that I wouldn't smoke crack
    and then wouldn't touch other people's work due to how it
    could look."
    This testimony was consistent with Farak's proffer.     "Farak took
    from approximately six of Hanchett's samples; including a 24.5
    gram crack cocaine sample from Pittsfield and a 3.5 gram crack
    cocaine sample from Northampton.   Farak used Hanchett's
    initialed evidence bags to repackage the samples.     Farak took
    from one of Pontes' samples; specifically 30 grams of 73 grams
    of powder cocaine from a Springfield case.   Farak replaced the
    cocaine with a counterfeit substance (baking soda) and made
    crack cocaine with it."
    There are two problems, however, with the assumption that
    Farak did not steal from her colleagues prior to the summer of
    2012.   First, Judge Carey did not credit those portions of her
    testimony that were at odds with what she had reported to her
    therapists about her addiction and her theft of police-submitted
    samples.   In 2009, Farak told her therapist that she had
    obtained drugs from the lab by taking portions of samples that
    had been sent to the lab to be tested.   Farak later testified
    that she was totally controlled by her drug addiction, and that,
    in tampering with police-submitted samples, she had begun
    crossing lines that she never thought she would cross.
    Second, Farak's testimony was not supported by
    postconviction discovery produced by the Attorney General's
    50
    office as part of its investigation.   The Attorney General was
    unable to corroborate Farak's testimony before the grand jury,
    and as part of her proffer, as to specific samples where she
    said that she had taken portions of a sample that had been
    assigned to another chemist.
    Farak testified that she had skimmed from the samples in
    three particular cases where she remembered the specific amounts
    involved.   She testified in detail as to the amounts that she
    had removed from those samples.    One was a case in which the
    Springfield police department submitted a sample of seventy-
    three grams of powder cocaine.    The sample was assigned to
    Pontes.   The second was a case submitted by the Northampton
    police department involving 3.5 grams of crack cocaine that had
    been assigned to Hanchett, and the third was a sample of 24.5
    grams of crack cocaine submitted by the Pittsfield police
    department that had been assigned to Hanchett.    The database
    provided to the office of the Attorney General of all samples
    tested at the Amherst Lab did not directly match any of these
    cases, and the office of the Attorney General was unable to
    confirm the existence of any such samples.    Thus, the record
    indicates that Farak's testimony as to the extent of her
    misconduct was, at least at times, unreliable.
    It is our responsibility, in the exercise of this court's
    supervisory authority, to craft a remedy suitable to the
    51
    available, reliable evidence.     As far as can be determined on
    this record, Farak's drug use spiraled out of control at the
    beginning of 2009, when she nearly depleted the jar of
    methamphetamine oil and started to search for other sources of
    drugs to satisfy her addiction.     Around that time, Farak began
    manipulating the computer system.    She also started stealing
    from police-submitted samples before and after they were tested,
    and from samples that had been assigned to other chemists.
    In light of the extensive and indeterminable nature of
    Farak's misuse of police samples and the lab's standards, a much
    more inclusive remedy is required than that suggested by either
    the district attorneys or the Attorney General.     In order to
    protect the integrity of the criminal justice system, and to
    afford relief to defendants whose convictions may have rested
    upon tampered evidence, we conclude that, in addition to those
    already dismissed where Farak signed the drug certificate, all
    convictions based on evidence that was tested at the Amherst lab
    on or after January 1, 2009, regardless of the chemist who
    signed the drug certificate, and all methamphetamine convictions
    where the drugs were tested during Farak's tenure at the Amherst
    lab, must be vacated and dismissed.     Accordingly, the class of
    "Farak defendants" includes the defendants in all of these
    cases.
    52
    3.    Prophylactic measures.   Finally, we turn to the third
    reported question:    whether the court should adopt additional
    prophylactic measures to address any future cases involving
    prosecutorial misconduct.
    The petitioners argue that the court should issue three
    standing orders to "create a better mechanism for addressing
    government misconduct [than future lawsuits] and ensur[e]
    disclosure of exculpatory evidence."     The petitioners request
    the court to issue a standing Brady order12 requiring specific
    disclosures, and setting forth specific disclosure deadlines.
    The Attorney General indorses this request; the district
    attorneys argue that Mass. R. Crim. P. 14, as appearing in 
    442 Mass. 1518
    (2004), and the rules of professional conduct
    adequately address prosecutors' disclosure obligations.     The
    petitioners suggest that standing Bridgeman II and Cotto orders,
    which would provide a procedure by which district attorneys
    could report and remedy government misconduct, would be
    appropriate so that any future misconduct of this nature could
    be remedied without protracted litigation.13    The district
    12   See Brady v. Maryland, 
    373 U.S. 83
    , 87 (1963).
    13The petitioners request that the court fine the Attorney
    General's office to punish its past misconduct adequately, and
    to create an incentive for the Attorney General's office to put
    into place meaningful controls to monitor, detect, and disclose
    future misconduct. The Attorney General does not dispute that
    the court has the authority, pursuant to Mass. R. Crim. P.
    53
    attorneys argue that the Bridgeman II and Cotto protocols would
    be "one size fits all" attempts to resolve unknown future
    misconduct, and that it would be preferable to tailor responses
    to any particular case, should one arise.
    a.   Brady order.   A prosecutor's core duty is "to
    administer justice fairly."    Commonwealth v. Tucceri, 
    412 Mass. 401
    , 408 (1992).   To fulfil that duty, a prosecutor is required
    to turn over exculpatory evidence to a defendant without regard
    to its impact on the case.    See generally Brady v. Maryland,
    
    373 U.S. 83
    , 87 (1963) (explaining that failure to disclose
    "evidence favorable to an accused . . . [that] is material
    either to guilt or to punishment" is violation of due process).
    Litigation strategy plays no role in this process.
    14 (c) (1), to impose remedial monetary sanctions for a
    discovery violation. See Commonwealth v. Frith, 
    458 Mass. 434
    ,
    439 (2010) (sanctions may be imposed under Mass. R. Crim. P.
    14 [c] [1] for failure to comply with discovery obligations);
    Commonwealth v. Carney, 
    458 Mass. 418
    , 427 (2010) (rule
    14 [c] [1] sanctions should be "tailored appropriately to cure
    any prejudice resulting from a party's noncompliance" with its
    discovery obligations).
    The Attorney General argues, however, that monetary
    sanctions are unnecessary because the office of the Attorney
    General has taken steps to avoid future misconduct, including
    revising existing policies and procedures. We do not agree.
    Based on our experience in Bridgeman II, we are aware of the
    substantial costs associated with providing adequate notice to
    thousands of individuals whose cases will be dismissed,
    including hiring outside vendors to research last known
    addresses. Because the office of the Attorney General is
    responsible for the prosecutorial misconduct, it shall bear the
    entire financial burden associated with notifying those affected
    defendants that their cases have been dismissed.
    54
    Under our rules of professional conduct, a prosecutor is
    required to "make timely disclosure to the defense of all
    evidence or information known to the prosecutor that tends to
    negate the guilt of the accused or mitigate the offense."     Mass.
    R. Prof. C. 3.8 (d), as appearing in 
    473 Mass. 1301
    (2016).     See
    Mass. R. Prof. C. 3.4 (a), as appearing in 
    471 Mass. 1425
    (2015)
    (attorney prohibited from unlawfully obstructing another party's
    access to evidence or from concealing evidence); Mass. R. Prof.
    C. 3.8 (g), as appearing in 
    473 Mass. 1301
    (2016) (prosecutor
    may not avoid pursuit of exculpatory evidence); Mass. R. Prof.
    C. 3.8 (i), as appearing in 
    473 Mass. 1301
    (2016)
    (postconviction disclosure of exculpatory evidence).
    The due process clauses of the Federal Constitution and the
    Massachusetts Declaration of Rights require that the
    Commonwealth disclose to a defendant material, exculpatory
    evidence in its possession or control.   See United States v.
    Agurs, 
    427 U.S. 97
    , 106-107 (1976); art. 12 of the Declaration
    of Rights of the Massachusetts Constitution ("every subject
    shall have a right to produce all proofs, that may be favorable
    to him"); Commonwealth v. Bing Sial Liang, 
    434 Mass. 131
    , 135
    (2001).   "A prosecution that withholds evidence . . . which, if
    made available, would tend to exculpate [a defendant] or reduce
    the penalty helps shape a trial that bears heavily on the
    defendant.   That casts the prosecutor in the role of an
    55
    architect of a proceeding that does not comport with standards
    of justice . . . ."   
    Brady, 373 U.S. at 87
    .
    Under our rules of criminal procedure, one of the nine
    categories of "automatic discovery" that the Commonwealth must
    provide to the defendant at or before the pretrial conference is
    "[a]ny facts of an exculpatory nature."14   See Mass. R. Crim.
    P. 14 (a) (1) (A) (iii), as amended, 
    444 Mass. 1501
    (2005); E.B.
    Cypher, Criminal Practice and Procedure § 26:8 (4th ed. 2014).15
    Rule 14 also requires a prosecutor to disclose certain specific
    categories of potentially exculpatory evidence, including all
    statements made by the defendant, "all promises, rewards or
    inducements made to witnesses the party intends to present at
    trial," and "all statements made in the presence of or by an
    identifying witness that are relevant to the issue of identity
    or to the fairness or accuracy of the identification
    14At the pretrial conference, the prosecutor and defendant
    are to "consider such matters as will promote a fair . . .
    disposition of the case," including discovery. See Mass. R.
    Crim. P. 11 (a), as appearing in 
    442 Mass. 1509
    (2004). We
    emphasize that judges may choose to be active participants,
    where necessary, to ensure compliance with disclosure
    obligations.
    15Rule 14 (a) of the Massachusetts Rules of Criminal
    Procedure incorporates the constitutional disclosure
    requirements of Brady. See Cassidy, Plea Bargaining, Discovery,
    and the Intractable Problem of Impeachment Disclosures, 64 Vand.
    L. Rev. 1429, 1481 (2011). See also Reporter's Notes to Mass.
    R. Crim. P. 14 (a), Massachusetts Rules of Court, Rules of
    Criminal Procedure (Thomson Reuters 2018).
    56
    procedures."   See Mass. R. Crim. P. 14 (a) (1) (A) (i), (viii),
    (ix).
    We take this opportunity to reexamine our rules of criminal
    procedure to determine whether they should be modified to better
    facilitate the timely disclosure of exculpatory evidence, and
    refer the question of an amendment of rule 14 to the court's
    standing advisory committee on the rules of criminal procedure.
    Rule 14 broadly defines exculpatory evidence as "[a]ny
    facts of an exculpatory nature" (emphasis added).     Mass. R.
    Crim. P. 14 (a) (1) (A) (iii).   See Commonwealth v. Hill, 
    432 Mass. 704
    , 715–716 (2000) (impeachment evidence is exculpatory);
    Commonwealth v. Ellison, 
    376 Mass. 1
    , 22 n.9 (1978)
    ("'exculpatory' is not a technical term meaning alibi or other
    complete proof of innocence, but simply imports evidence which
    tends to negate the guilt of the accused . . . or, stated
    affirmatively, supporting the innocence of the defendant"
    [quotations omitted]).   While rule 14 envisions a broad
    disclosure requirement for exculpatory facts, the rule
    explicitly identifies only a few specific categories of
    potentially exculpatory information that a prosecutor must
    disclose.   See Mass. R. Crim. P. 14 (a) (1) (A) (i), (viii),
    (ix) (Commonwealth must disclose defendant's statements,
    "promises, rewards or inducements" given to prosecution
    57
    witnesses, and statements made during and about identification
    procedures).
    To provide more detailed guidance to prosecutors, we ask
    the standing advisory committee to draft a proposed Brady
    checklist to clarify the definition of exculpatory evidence.     A
    practice indorsed by the American Bar Association,16 a Brady
    checklist establishes a more thorough baseline of the most
    likely sources and types of exculpatory information for
    prosecutors to consider.   Brady checklists have been added to
    the local rules in many Federal District Courts, in some
    instances in response to prosecutorial misconduct.     See
    generally Sullivan, Enforcing Compliance with Constitutionally-
    Required Disclosures:   A Proposed Rule, 2016 Cardozo L. Rev. de
    novo 138 (2016) (describing author's experience as trial judge
    in case where sitting United States Senator was convicted but
    Federal prosecutors concealed evidence favorable to defendant,
    and discussing local rules that incorporate requirements of
    Brady).   See also Rule 26.2 of the Local Rules of the United
    States District Court for the Northern District of Florida (eff.
    Nov. 24, 2015); Rule 88.10 of the Local Rules of the United
    States District Court for the Southern District of Florida (rev.
    Dec. 1, 2017); Yaroshefsky, Prosecutorial Disclosure
    16See American Bar Association, Resolution (rev. 2011),
    http://www.abajournal.com/files/104A_Revised_2011.pdf
    [https://perma.cc/5T2D-2DCR].
    58
    Obligations, 62 Hastings L.J. 1321, 1327-1328, 1346 (2011)
    (describing American Bar Association Criminal Justice Standards
    governing "Disclosure of Evidence by the Prosecutor," as well as
    indorsing use of Brady checklists).
    No checklist can exhaust all potential sources of
    exculpatory evidence.   It is crucial, therefore, that the
    proposed amendment to rule 14 make clear that the potential
    universe of exculpatory evidence includes, but is not limited
    to, the types of evidence included in the checklist.    See
    generally Jones, Here Comes the Judge:    A Model for Judicial
    Oversight and Regulation of the Brady Disclosure Duty, 46
    Hofstra L. Rev. 87, 113–114 (2018).    See also Sullivan, supra at
    148-149; Rule 116.2 of the Local Rules of the United States
    District Court for the District of Massachusetts (eff. June 1,
    2018).    The committee should consider whether the categories
    used in the Federal District Courts would be useful, and also
    should consider whether any other categories would help
    facilitate the disclosure of Brady materials.
    We emphasize, in addition, that where a prosecutor is
    unsure whether exculpatory information should be disclosed, due
    to a concern regarding privilege or work product, or for any
    other reason, the prosecutor must file a motion for a protective
    order and must present the information for a judge to review in
    camera.   See Mass. R. Crim. P. 14 (a) (6).   The judge will then
    59
    decide whether, and under what conditions, the information must
    be disclosed.   
    Id. Absent a
    protective order, no prosecutor,
    whether in the office of the Attorney General or in the office
    of a district attorney, has the authority to decline to disclose
    exculpatory information.
    b.   Bridgeman II and Cotto orders.      The petitioners argue
    that the court should adopt standing orders based on the
    procedures formulated in Bridgeman II and Cotto.      A Bridgeman II
    order would require that a prosecutor who knew, or had reason to
    know, that misconduct had occurred in a particular case would
    have ninety days to notify the Chief Justice of the Trial Court
    and the Committee for Public Counsel Services and to provide
    them with a list of cases affected by the misconduct.      See
    Bridgeman 
    II, 476 Mass. at 328
    .     The district attorneys then
    would have the burden of establishing, for any case that they
    did not agree to dismiss, that they had untainted evidence to
    support the conviction.    
    Id. A Cotto
    order would require a
    government attorney who knows that attorney misconduct affected
    a criminal case to notify the Chief Justice of the Trial Court,
    the Committee for Public Counsel Services, and the Office of Bar
    Counsel within thirty days.      See 
    Cotto, 471 Mass. at 114
    .    The
    petitioners argue that, when misconduct occurs, a lawsuit should
    not be required in order to initiate these protocols.      The
    Attorney General agrees with the petitioners that the requested
    60
    standing orders should issue.    The district attorneys contend,
    however, that such standing orders do not take into
    consideration that the Bridgeman II protocol placed the burden
    on the district attorneys, in part out of necessity, because of
    the need to adjudicate 20,000 convictions.    The district
    attorneys note also that such standing orders would be
    repetitive of existing professional and ethical obligations for
    attorneys in the Commonwealth.
    In fashioning the remedy in Bridgeman II, we took into
    account the scope of the misconduct and the number of
    convictions implicated by the misconduct.    See Bridgeman 
    II, 476 Mass. at 317
    ("where large numbers of persons have been wronged,
    the wrong must be remedied in a manner that is not only fair as
    a matter of justice, but also timely and practical").     While we
    do not "expect defendants to bear the burden of a systemic
    lapse," 
    id., the balance
    of equities will not always favor a
    departure from the general principle that "relief from a
    conviction generally requires the defendant to file a motion for
    a new trial" (citation omitted).    See 
    id. at 316.
      If similar,
    widespread abuse does come to light in the future, the
    appropriate remedy must be complete, and it must correspond to
    the scope of the misconduct.    A court reviewing that misconduct
    in the first instance is best positioned to determine the remedy
    61
    appropriate to a particular case.   We therefore decline to adopt
    standing Bridgeman II and Cotto orders.
    Conclusion.   We answer the reported questions as follows:
    1. The question is moot, as there are no remaining "third
    letter" defendants.
    2. The class of "Farak defendants" includes all defendants
    who pleaded guilty to a drug charge, admitted to sufficient
    facts on a drug charge, or were found guilty of a drug charge,
    where (i) Farak signed the certificate of analysis; (ii) the
    conviction was based on methamphetamine and the drugs were
    tested during Farak's tenure at the Amherst lab; or (iii) the
    drugs were tested at the Amherst lab on or after January 1,
    2009, and through January 18, 2013, regardless of who signed the
    certificate of analysis.
    3. Prophylactic measures are appropriate based on the
    record in this case. We recommend that this court's standing
    advisory committee on the rules of criminal procedure propose
    amendments to Rule 14 of the Massachusetts Rules of Criminal
    Procedure to include a Brady checklist and any other
    modifications the committee believes would be beneficial,
    consistent with this opinion.
    The matter is remanded to the county court for entry of a
    declaratory judgment, as set forth in this opinion, vacating and
    dismissing the drug convictions of all "Farak defendants," as
    defined herein, and for further proceedings consistent with this
    opinion.
    So ordered.