Commonwealth v. DiBenedetto ( 2016 )


Menu:
  • NOTICE: All slip opinions and orders are subject to formal
    revision and are superseded by the advance sheets and bound
    volumes of the Official Reports. If you find a typographical
    error or other formal error, please notify the Reporter of
    Decisions, Supreme Judicial Court, John Adams Courthouse, 1
    Pemberton Square, Suite 2500, Boston, MA 02108-1750; (617) 557-
    1030; SJCReporter@sjc.state.ma.us
    SJC-10658
    COMMONWEALTH   vs.   FRANK DiBENEDETTO.
    Suffolk.    May 5, 2016. - September 8, 2016.
    Present:    Gants, C.J., Spina, Botsford, Duffly, & Hines, JJ.1
    Deoxyribonucleic Acid. Practice, Criminal, New trial, Appeal.
    Supreme Judicial Court, Jurisdiction. Evidence,
    Exculpatory.
    Indictments found and returned in the Superior Court
    Department on May 21, 1986.
    Following review by this court, 
    458 Mass. 657
     (2011), a
    motion for a new trial was heard by Robert A. Mulligan, J.
    A request for leave to appeal was allowed by Cordy, J., in
    the Supreme Judicial Court for the county of Suffolk.
    Wendy H. Sibbison (Dennis A. Shedd with her) for the
    defendant.
    Zachary Hillman, Assistant District Attorney, for the
    Commonwealth.
    David B. Hird, Cecile Farmer, & Vanshika Vij, of the
    District of Columbia, Patrick O'Toole, Jr., & Evan Miller, for
    The Innocence Project, amicus curiae, submitted a brief.
    1
    Justices Spina and Duffly participated in the deliberation
    on this case prior to their retirements.
    2
    BOTSFORD, J.   On February 19, 1986, Joseph Bottari and
    Frank Chiuchiolo were shot multiple times and killed in the
    North End section of Boston.   Louis Costa, Paul Tanso, and the
    defendant in this appeal, Frank DiBenedetto, were charged with
    their murders.   On February 3, 1994, after a second trial, a
    jury found the defendant and Costa guilty of murder in the first
    degree of Bottari and Chiuchiolo.2,3   See Commonwealth v.
    DiBenedetto, 
    427 Mass. 414
    , 415 (1998) (DiBenedetto II).4
    In 2005, the defendant filed a motion for a new trial on
    the basis of newly discovered evidence, namely, deoxyribonucleic
    2
    Louis Costa and the defendant were first tried together in
    1988; each was found guilty of murder in the first degree. The
    convictions, however, were reversed by this court based on the
    erroneous admission at trial of the uncross-examined deposition
    testimony of Richard Storella, a significant witness for the
    Commonwealth. See Commonwealth v. DiBenedetto, 
    414 Mass. 37
    ,
    38-44, 50 (1992) (DiBenedetto I).
    3
    In 1988, Paul Tanso was tried separately from Costa and
    the defendant as a result of a successful motion to sever his
    case. See Commonwealth v. DiBenedetto, 
    458 Mass. 657
    , 659 n.7
    (2011) (DiBenedetto III). Tanso was initially convicted on two
    counts of murder in the first degree, but his convictions were
    reversed by this court based on the erroneous admission at trial
    of Storella's deposition testimony, see note 2, supra.
    Commonwealth v. Tanso, 
    411 Mass. 640
    , 641-642, cert. denied, 
    505 U.S. 1221
     (1992). In 1994, Tanso was retried and found not
    guilty. See DiBenedetto III, supra.
    4
    The defendant filed in the United States District Court
    for the District of Massachusetts a petition for a writ of
    habeus corpus, which was denied, DiBenedetto v. Hall, 
    176 F. Supp. 2d 45
    , 66 (D. Mass. 2000), and the United States Court of
    Appeals for the First Circuit affirmed the denial. DiBenedetto
    v. Hall, 
    272 F.3d 1
    , 13 (1st Cir. 2001), cert. denied sub nom.
    DiBenedetto v. Spencer, 
    535 U.S. 1024
     (2002).
    3
    acid (DNA) evidence showing that both victims were excluded as
    contributors to the DNA that was found on the defendant's
    sneakers.   On January 12, 2009, the motion judge, who also was
    the trial judge, denied without a hearing the motion in a
    written memorandum of decision and order.   The defendant filed a
    gatekeeper petition pursuant to G. L. c. 278, § 33E (§ 33E), and
    on June 16, 2009, a single justice of this court granted leave
    to appeal the denial of the motion for a new trial to the full
    court.   Following briefing and argument, this court vacated the
    order denying the motion and remanded the matter to the Superior
    Court for further findings.5   See Commonwealth v. DiBenedetto,
    
    458 Mass. 657
    , 659, 670 (2011) (DiBenedetto III).6
    5
    We stated that, on remand, if the Commonwealth so
    requested, an evidentiary hearing would be appropriate to
    inquire into the scientific reliability of the conclusions
    stated by the defendant's deoxyribonucleic acid (DNA) expert.
    See DiBenedetto III, 458 Mass. at 671. We added that the
    Commonwealth also might seek to challenge whether the DNA
    evidence qualified as newly discovered evidence. See id. at 671
    n.20.
    6
    Louis Costa, who was tried with the defendant in both
    previous trials, had also filed a motion for a new trial in
    2005. His and the defendant's motions were considered together
    in the Superior Court by the motion judge and thereafter by this
    court in DiBenedetto III. Following remand to the Superior
    Court pursuant to the rescript in DiBenedetto III, 458 Mass. at
    672-673, the defendant's case and Costa's case were separated,
    with the motion judge retaining jurisdiction only of the case
    against the defendant. At the time of the murders, Costa was
    under the age of seventeen, and thus, after our decision in
    Diatchenko v. District Attorney for the Suffolk Dist., 
    466 Mass. 655
    , 658-659 (2013), S.C., 
    471 Mass. 12
     (2015), Costa was
    entitled to be resentenced to a sentence granting him the
    4
    Following remand, the Commonwealth did not seek an
    evidentiary hearing.   The defendant submitted additional
    affidavits, one from an expert in DNA analysis who confirmed the
    conclusions reached by the defendant's first DNA expert in 2004,
    and another from a separate expert concerning the reliability of
    eyewitness identifications.   After a nonevidentiary hearing, the
    motion judge again denied the defendant's new trial motion,
    explaining his reasons in a further memorandum of decision and
    order.
    The defendant filed a notice of appeal and a petition in
    the county court to reinstate his appeal in the full court.     The
    Commonwealth opposed the petition on both procedural and
    substantive grounds, arguing that the defendant was required to
    seek leave to appeal from the renewed denial of his new trial
    motion through a second gatekeeper petition under § 33E.    A
    single justice of this court agreed with the Commonwealth,
    treated the defendant's petition to reinstate his appeal as a
    second gatekeeper petition, and denied the petition, concluding
    that the defendant did not present a "substantial" claim that
    possibility of parole. See Commonwealth v. Costa, 
    472 Mass. 139
    , 140-141 (2015). Because only the defendant is before this
    court in the present appeal, we discuss only the defendant's
    motion for a new trial, and its course through the Superior
    Court and this court.
    5
    warranted review by the full court.7    In September, 2015, after a
    series of additional motions and proceedings in the county
    court, the defendant filed a motion in the full court to
    reinstate his appeal.    The court thereafter ordered briefing "on
    the question whether the defendant is entitled to reinstatement
    of his appeal and on the merits of the defendant's underlying
    claims."
    In the discussion that follows, we consider first whether
    the defendant is entitled to have his original appeal to the
    full court from the denial of his motion for a new trial
    reinstated following the court's remand for further findings.
    We conclude that reinstatement of the appeal is appropriate,
    even though the court did not expressly retain jurisdiction.     We
    then consider the defendant's claim that he is entitled to a new
    trial based on the new DNA evidence, and conclude that the
    motion judge did not abuse his discretion in denying the
    defendant's motion.8
    1.    Background.   The facts of this case are set out in some
    detail in DiBenedetto II, 427 Mass. at 416-420, and DiBenedetto
    7
    Pursuant to G. L. c. 278, § 33E, a single justice of this
    court may grant leave to appeal from the denial of a motion for
    a new trial to the full court where the gatekeeper petition
    "presents a new and substantial question which ought to be
    determined by the full court."
    8
    We acknowledge the amicus brief submitted by The Innocence
    Project in support of the defendant.
    6
    III, 458 Mass. at 658-663.   We summarize them here.   Around 9:30
    P.M. on February 19, 1986, a Boston police officer found the
    bodies of the victims in Slye Park in the North End section of
    Boston.   Chiuchiolo had been shot seven times, including five
    shots to the head, and Bottari had been shot sixteen times,
    including six shots to the head.    Three different guns had been
    used to shoot each victim:   two .380 caliber semiautomatic
    pistols and a .22 caliber revolver.    When police responded to
    the scene shortly after the shooting incident ended, the
    victims' bodies were surrounded by pools of blood and multiple
    spent shell casings.
    Joseph Schindler, who lived in an apartment building on one
    side of Slye Park, observed much of the shooting incident as it
    took place in the park below him.    He testified that around 9:30
    P.M. that evening, he was sitting in his third-floor apartment,
    from which he had an unobstructed view of the park.    He heard
    four or five "'cracks or pops' that he thought were fireworks,"
    DiBenedetto III, 458 Mass. at 660, and he looked out his window
    and "saw orange-red flashes in the area of the hand of a man
    whom he later identified as [the codefendant,] Costa."     Id.,
    quoting DiBenedetto II, 427 Mass. at 416.    Schindler saw five
    men running in the park, two of whom fell to the ground at
    separate times in different locations.    Each of the other three
    men, the shooters, left the park and walked toward Boston Harbor
    7
    after each descended a series of staircases on the other side of
    the park.   In the course of their descent, each shooter at one
    point walked facing toward Schindler so that he could observe
    their faces and bodies -- their front profile -- one at a time.
    However, before the last person -- later identified by Schindler
    as the defendant -- descended all the sets of stairs and left
    the park, he stopped and turned around, returning to the area
    where Chiuchiolo's body lay on the ground.   This individual,
    whom we refer to as the third shooter, "stood bent at the waist
    so that he was just a few inches from the head area of the prone
    [Chiuchiolo].   Schindler then saw four to six flashes
    accompanied by the same sound he had initially heard."
    DiBenedetto III, 458 Mass. at 660 & n.8.   The park was lit by
    artificial lights, and Schindler estimated that he observed the
    shooting incident and the three shooters in the park over the
    course of a three- to five-minute period, including a three- to
    five-second period during which the defendant stood facing him
    as he was walking down the stairs and leaving the park;
    Schindler testified that his ability to identify the defendant's
    face principally depended on this three- to five-second
    observation.
    After the three shooters left Slye Park, Schindler
    telephoned the police, who reported to the scene and interviewed
    him regarding his observations.   That night, Schindler provided
    8
    descriptions of the three men whom he saw leaving the park,
    descriptions that were not "entirely accurate," id., but the
    following day, Schindler went to the police station and informed
    police officers that, given the opportunity, he could identify
    the three men.9   He later identified the assailants as
    DiBenedetto, Costa, and Tanso on multiple occasions, including
    identifying each man individually in a separate lineup conducted
    at the police department, each in pretrial court room
    proceedings, and Costa and the defendant at trial.   Id.
    Richard Storella, who was at one time a close friend of the
    defendant and Costa, testified as follows.   Bottari and
    Chiuchiolo told him to set up a "drug buy" with the defendant,
    during which they would rob the defendant of the drugs.
    Storella set up the purported drug buy meeting for around 9 P.M.
    on February 19, 1986, but he first informed the defendant of the
    victims' intention to steal the drugs.   With that knowledge, the
    defendant formed a plan with Costa, Tanso, and Storella to meet
    with the victims in Slye Park and shoot and kill them on sight.
    Around 8 P.M. on February 19, these four men met at Enrico
    Ponzo's house and readied their weapons and ammunition,
    9
    Joseph Schindler testified at trial that when he was
    initially interviewed by police following the incident, he told
    the police that he was not able to make affirmative
    identifications of the three assailants because he saw that his
    wife was very concerned about the prospect of his being involved
    in the case.
    9
    including a .22 caliber revolver that Storella had retrieved and
    given to Tanso, and hollow point bullets.    Storella then
    accompanied the men to Slye Park but remained outside the park
    itself, from where he witnessed each of the three men fire shots
    at the victims when the victims arrived; Storella ran out of the
    park as DiBenedetto ran toward Chiuchiolo.    The following day,
    Storella heard Costa, Tanso, and the defendant talking about the
    incident.   During their conversation, each of them stated that
    he had shot each victim.   DiBenedetto III, 458 Mass. at 659,
    quoting DiBenedetto II, 427 Mass. at 415-416.    Between
    Storella's first interview with the police and the 1994 trial,
    however, he had given five "different and inconsistent accounts
    of what he had seen that night, including one in which he
    claimed that he himself had been one of the murderers."
    DiBenedetto III, supra, quoting DiBenedetto II, supra.       Storella
    had been granted immunity from prosecution, including
    prosecution for murder, in exchange for his "truthful" testimony
    against the other three.   DiBenedetto III, supra.
    The defendant's motion for a new trial centers on a pair of
    Nike sneakers that were introduced in evidence for the first
    time during the 1994 trial.10   Schindler testified that the third
    shooter, i.e., the defendant, "wore white Nike brand sneakers
    10
    The Commonwealth did not introduce the sneakers in
    evidence at the defendant's first trial. See DiBenedetto III,
    458 Mass. at 658.
    10
    that had become 'grayish with age,' identifiable by the
    trademark red 'swoosh' design on them."    DiBenedetto III, 458
    Mass. at 660.   When the defendant was arrested in his apartment
    four days after the shooting incident, he was wearing a pair of
    white Nike sneakers that Schindler identified at trial as
    "similar" to the shoes the third shooter was wearing on the
    night of the incident.   Id.   We repeat here our description in
    DiBenedetto III of the testing of the Nike sneakers:
    "At the time DiBenedetto's sneakers were seized in
    1986, they were sent to the Boston police crime laboratory
    (crime lab) for testing. A senior criminalist employed by
    the crime lab visually examined the sneakers for the
    presence of blood, but observed nothing remarkable and
    specifically observed no stains that could be tested for
    the presence of blood. No chemical testing of the sneakers
    was conducted at that time.
    "On December 31, 1993, on request by the prosecutor
    and days before the retrial of DiBenedetto and Costa was
    scheduled to begin, David L. Brody, the director of the
    crime lab, performed a preliminary test for the presence of
    blood on the sneakers. The test was conducted with the use
    of the chemical phenolphthalein and hydrogen peroxide, an
    oxidizing agent. Brody's test of the right sneaker yielded
    no positive results, but an outside edge of the sole of the
    left sneaker tested positive, meaning the result indicated
    the presence of blood. George Abbott, an expert retained
    by the defendant, however, was unable to replicate this
    result on the left sneaker, but identified a small area on
    the sole of the right sneaker that tested positive.
    "The type of phenolphthalein test performed by Brody
    and Abbott may return a false positive if applied to
    certain plant substances, referred to as 'plant
    peroxidase.' Moreover, the test does not distinguish
    between human blood and any other animal blood. It is only
    possible to make that type of distinction by performing one
    or more additional, confirmatory tests for the presence of
    human blood, but none was performed. Immediately before
    11
    the second trial, the defendants' counsel moved to suppress
    any evidence relating to the phenolphthalein test results
    and in effect renewed the motion at trial; their argument,
    made most forcefully at trial, was that the evidence as
    presented did not allow a reasonable inference that any
    blood on DiBenedetto's sneakers was in fact the blood of
    'any relevant party' present at Slye Park on February 19,
    1986. The motion to suppress was denied, the defendants'
    argument on the issue at trial overruled, and the jury
    heard evidence from Brody and from Abbott about the testing
    of the sneakers for blood and the respective experts'
    opinions concerning the results of the testing. . . .
    ". . .
    "In 2004, Janet Hanniman, a forensic serologist
    retained by the defendants, reanalyzed DiBenedetto's
    sneakers. She was able to extract DNA evidence from the
    area of the left sneaker that Brody testified had yielded a
    presumptive positive result for the presence of blood; she
    also extracted DNA from stains on other specific portions
    of the right and left sneakers. She found that the DNA
    yielded 'weak and incomplete genetic profiles that were
    mixtures from at least three people.' Based on her
    examination, she excluded both Chiuchiolo and Bottari as
    contributors to that DNA. Hanniman opined that if the
    blood of either victim had been the cause of the positive
    preliminary tests completed in 1993-1994, DNA contained in
    that blood also would have been present on the sneakers;
    and that if that DNA were present, it would still be
    detectable in 2004. Hanniman could not confirm whether
    blood was the source of the DNA she identified, but she
    could not exclude it as a possibility."
    DiBenedetto III, 458 Mass. at 661, 663.
    Following DiBenedetto III, on remand to the Superior Court,
    the defendant submitted an affidavit from Carll Ladd, a forensic
    scientist who is the supervisor of the DNA unit in the State of
    Connecticut's forensic laboratory.   Ladd confirmed Hanniman's
    conclusions that (1) DNA profiles were found in seven different
    locations on the sneakers, including the two locations that were
    12
    phenolphthalein positive in 1994; (2) the profiles consisted of
    DNA mixtures derived from multiple people; (3) the victims were
    excluded as contributors to any of the mixtures; and (4) if
    either of the victims' DNA had been deposited on the sneakers in
    1986, that DNA would still be detectable on the sneakers when
    tested in 2004.   The defendant also submitted an affidavit of a
    professor of psychology at Tufts University, Samuel Sommers, on
    the fallibility of eyewitness identifications.   Sommers opined
    on factors that present risks concerning the accuracy of
    eyewitness identifications generally and concluded that
    "[m]ultiple risk factors for mistaken eyewitness identification
    and inflated eyewitness confidence were present in Schindler's
    identifications of DiBenedetto and Costa."   As indicated,
    following a nonevidentiary hearing, the judge again denied the
    defendant's motion for a new trial.
    Discussion.   1.   Reinstatement of the defendant's appeal.
    General Laws c. 278, § 33E, governs not only direct appeals of
    convictions of murder in the first degree, but also motions for
    a new trial in such cases, whether filed before the defendant's
    direct appeal has been decided or after the entry of the
    rescript by this court.   With respect to motions for a new trial
    filed after rescript, § 33E provides:
    "If any motion is filed in the superior court after
    rescript, no appeal shall lie from the decision of that
    court upon such motion unless the appeal is allowed by a
    13
    single justice of the supreme judicial court on the ground
    that it presents a new and substantial question which ought
    to be determined by the full court."
    The defendant's motion for a new trial at issue here was
    filed after the rescript of his direct appeal from the 1994
    conviction in DiBenedetto II.   A single justice allowed his
    gatekeeper petition, impliedly concluding that it raised a "new
    and substantial question which ought to be determined by the
    full court."   Commonwealth v. Ambers, 
    397 Mass. 705
    , 707 (1986).
    In DiBenedetto III, however, we did not reach the merits of the
    question raised -- whether the new DNA evidence relating to the
    sneakers "cast[] real doubt on the justice of the conviction,"
    Commonwealth v. Grace, 
    397 Mass. 303
    , 305 (1986) -- because we
    determined that it was "necessary to remand the case for further
    findings by the motion judge concerning the proffered DNA
    evidence and its importance to the defendant['s] claim [that he]
    was not the third shooter in light of the evidence presented at
    trial."   See DiBenedetto III, 458 Mass. at 670.   We added that
    "[a] remand [was] particularly appropriate . . . because of the
    fact that the motion judge was the trial judge with a thorough
    knowledge of the trial proceedings . . . who had the opportunity
    to observe the trial witnesses firsthand."   Id. at 670-671.
    Accordingly, we vacated the motion judge's order denying the
    defendant's motion for a new trial and remanded the case to the
    Superior Court for further consideration of the motion in a
    14
    manner consistent with our opinion.   Id. at 672-673.   We did not
    explicitly state that we were retaining jurisdiction.11
    We disagree with the Commonwealth's position that because
    we did not expressly retain jurisdiction in remanding the case
    to the Superior Court, we did not intend to do so, and that,
    therefore, the defendant could only seek to appeal from the
    judge's further denial of the motion by filing a second
    gatekeeper petition under § 33E.   Rather, we conclude that the
    second gatekeeper petition was not required here because a
    single justice already determined in 2009 that the defendant's
    motion for a new trial raised a new and substantial issue worthy
    of consideration by the full court.   We did not decide that
    issue in DiBenedetto III, but instead remanded the case to the
    Superior Court for further hearing and findings that would
    enable us to better do so.   Now that the judge has held the
    hearing and rendered a further decision, the defendant is
    entitled to have us decide that issue.12   Cf. Commonwealth v.
    11
    Compare Commonwealth v. Greineder, 
    464 Mass. 580
     (2013);
    Commonwealth v. Lennon, 
    463 Mass. 520
     (2012); Commonwealth vs.
    Mazza, SJC-11363.
    12
    Contrary to the Commonwealth's claim, the merits issue
    the defendant raises here is not "wholly new," but the same
    issue he originally raised in his motion for a new trial:
    whether he is entitled to a new trial based on the new DNA
    evidence, where the Commonwealth and the judge in effect
    accepted that the DNA evidence was newly discovered.
    15
    Geraway, 
    364 Mass. 168
    , 175-176 (1973).     Cf. also Commonwealth
    v. Hurley, 
    391 Mass. 76
    , 78-79 (1984).
    2.    Motion for a new trial.    To prevail on a motion for a
    new trial on the basis of newly discovered or newly available
    evidence, the defendant must meet a two-part test.     He must
    demonstrate, first, that the evidence was previously unknown to
    him or not reasonably discoverable before trial and, second,
    that the evidence "casts real doubt on the justice of the
    conviction."   Grace, 397 Mass. at 305.    See Commonwealth v.
    Cowels, 
    470 Mass. 607
    , 616 (2015).     In this case, the
    Commonwealth, although afforded a specific opportunity to do so,
    see DiBenedetto III, 458 Mass. at 664 n.11, 671 n.20, has not
    contested that the DNA analysis performed by Hanniman in 2004
    constitutes newly discovered evidence.    We therefore accept, as
    did the judge, that the defendant satisfies the first prong of
    the Grace test.   The issue is whether he has satisfied the
    second.
    The defendant argues that, for two reasons, the newly
    discovered DNA evidence, indicating that both victims were
    excluded as possible sources of the DNA mixture contained in
    blood found on the Nike sneakers, casts real doubt on the
    justice of his conviction.   The first, and most significant in
    the defendant's view, is that the evidence constitutes
    "powerfully exculpatory evidence" because it tends to show that
    16
    the defendant could not have been the third shooter in the
    circumstances of the case.13   The second reason is that the same
    DNA evidence would likely render inadmissible the evidence of
    the phenolphthalein test results as evidence tending to show
    that the victims' blood was on the sneakers, and more
    importantly, the new DNA evidence would foreclose the
    Commonwealth from arguing that the defendant's sneakers, with
    the blood, provided strong physical evidence that supported and
    reinforced Schindler's identification of the defendant as the
    third shooter.
    New evidence will "cast[] real doubt on the justice" of a
    defendant's conviction if there is a substantial risk that the
    jury would have reached a different conclusion had the evidence
    been admitted at trial.   Grace, 397 Mass. at 306.   The standard
    is not whether the verdict in fact would have been different,
    but whether there is a meaningful risk that it would have been.
    See Commonwealth v. Sullivan, 
    469 Mass. 340
    , 350-351 (2014),
    13
    Schindler testified that the third shooter was standing
    essentially over the prone body of Chiuchiolo with his gun just
    inches away from Chiuchiolo's head and then fired the gun
    repeatedly. By the time the police arrived, there were large
    pools of blood on the ground around Chiuchiolo's head. The
    defendant argues, therefore, that if he were the third shooter
    and had been wearing the subsequently seized Nike sneakers
    during the killings, certainly the sneakers would have the blood
    of one or both victims on them.
    17
    quoting Grace, supra.   Accord Cowels, 470 Mass. at 617.14   And
    because "[s]uch fact-specific analysis requires a thorough
    14
    In a number of recent cases, we have considered
    arguments, similar to the defendant's second argument -- that a
    new trial was required because of newly discovered or newly
    available evidence that would have rendered inadmissible certain
    evidence on which the Commonwealth relied at trial. See
    Commonwealth v. Cameron, 
    473 Mass. 100
     (2015); Commonwealth v.
    Cowels, 
    470 Mass. 607
     (2015); Commonwealth v. Sullivan, 
    469 Mass. 340
     (2014). In Cowels, we discussed how the Grace test
    applies to such a case:
    "In the typical case, where a defendant argues on the
    basis of newly discovered exculpatory evidence that was not
    presented at the original trial, we ask 'whether the new
    evidence would probably have been a real factor in the
    jury's deliberations' had it been presented [emphasis
    supplied]. Commonwealth v. Grace, 
    397 Mass. at 306
    . In
    this case, where the defendants argue on the basis of a
    newly available analysis that likely would have rendered
    inculpatory evidence presented at the original trial
    inadmissible, we ask whether that inculpatory evidence
    'likely was a "real factor" in the jury's deliberations
    such that its elimination would cast real doubt on the
    justice of the defendant's conviction' [emphasis supplied].
    Commonwealth v. Sullivan, 
    469 Mass. 340
    , 350 (2014). . . .
    If we conclude that the subsequently eliminated inculpatory
    evidence likely did play an important role in the jury's
    deliberations, then we must conclude that there is '"a
    substantial risk that the jury would have reached a
    different conclusion" if it had not been admitted at
    trial.'"
    Cowels, supra at 618. As we explained in Cowels, although the
    question asked to determine whether newly discovered evidence
    entitles the defendant to a new trial may differ, depending on
    the potential effect of that evidence on the case -- i.e., would
    the new evidence add exculpatory evidence or remove inculpatory
    evidence -- the focus of the test is the same: whether the
    evidence probably would have been a "real factor" in the jury's
    decision, such that there is a substantial risk that the jury
    would have reached a different conclusion had the evidence been
    admitted at trial (or excluded, as the case may be). Id. at
    18
    knowledge of trial proceedings . . . , we afford special
    deference to the rulings of a motion judge who was also the
    trial judge" (citation omitted).   Sullivan, supra at 351.
    The motion judge in this case, who was also the trial
    judge, rejected both of the defendant's arguments.   The judge
    questioned the exculpatory value of the new DNA evidence insofar
    as, in his view, the jury reasonably could have inferred either
    that the defendant was not wearing the same Nike sneakers on the
    night of the killings as he was when arrested four days later,
    or that the defendant had wiped the sneakers clean of virtually
    all the blood that may have been on them; the judge also stated
    that, in any event, because the serologist Hanniman had only
    tested a discrete number of areas on the sneakers, the defendant
    had not demonstrated the "complete absence" of the victims' DNA
    from the sneakers. As for the defendant's second argument, the
    judge restated the conclusion he had reached when he originally
    denied the defendant's motion for a new trial in 2009:   his
    observation of the first trial as it proceeded persuaded him
    that the allegedly inculpatory blood-on-the-sneakers evidence
    had been of marginal value to the prosecution and "was not of
    significant consequence at trial to the jury's assessment of the
    defendant's guilt."   The judge's principal reason for rejecting
    617-618. See Commonwealth v. Tucceri, 
    412 Mass. 401
    , 413
    (1992), citing Grace, 
    397 Mass. at 306
    .
    19
    the defendant's claims, however, was tied to his assessment of
    the strength of the Commonwealth's case, and, in particular, the
    exceptional (in his view) strength and credibility of the
    identification evidence supplied by Schindler -- an
    identification that was corroborated by the other eyewitness,
    Storella, who, despite having provided many versions of the
    events, undisputedly knew the defendant (as well as Costa and
    Tanso) and had consistently identified the defendant and Costa
    as two of the three shooters.
    The defendant challenges the judge's decision as based on a
    mischaracterization of trial evidence and speculation as to the
    inferences the jury might draw if the new DNA evidence had been
    presented at trial.   On mischaracterization, he argues, for
    example, that the judge repeatedly stated that Schindler viewed
    the defendant for three to five minutes, and that the judge
    declined to give any weight to Schindler's critical testimony
    that his (Schindler's) ability to identify the defendant was
    based on a three- to five-second observation of the defendant as
    he stood on a well-lit set of stairs leading out of the park.
    Schindler certainly did testify about the importance of the
    three- to five-second period of observation of the defendant's
    face to his (Schindler's) ability to identify the defendant, but
    Schindler also testified that he was "accumulating" information
    about the defendant during the entire three- to five-minute
    20
    period he was observing the defendant and the other men in the
    park.     In that sense, the three- to five-minute period was
    certainly relevant to Schindler's capacity to identify the
    defendant, and we cannot say the judge abused his discretion in
    focusing on this longer period in assessing the strength of
    Schindler's identification testimony.15
    With respect to speculation, the defendant points to the
    judge's proffered reasons that the jury would not likely have
    given much significance to the new DNA evidence if it had been
    available at trial, such as the judge's assumption that the jury
    reasonably could have inferred that on the night of the
    killings, the defendant was wearing a pair of sneakers different
    from the ones he was wearing when he was arrested four days
    later, or that the defendant washed his sneakers prior to being
    15
    Another example provided by the defendant of the alleged
    misrepresentation of the evidence by the judge concerns the
    distance from Schindler's third-floor study window to the
    particular location in Slye Park where he observed each
    shooter's face when each shooter was heading out of the park and
    toward Boston Harbor. There was evidence that the distance
    measured eighty-eight feet and, although Schindler testified
    based on a chalk depicting his apartment building and the park
    that he was "willing to believe" that the distance was
    approximately ninety feet, he later reaffirmed that his
    estimation of the distance was fifty feet; the judge's decision
    focuses on the fifty feet. There was no evidence presented at
    trial as to what specifically could or could not be seen at
    fifty versus eighty-eight feet, and the jury also took a view
    and observed these locations for themselves. In the
    circumstances of this case, the thirty-eight foot difference
    between the measured distance and Schindler's estimation does
    not appear to be of real significance in assessing the
    correctness of the judge's decision.
    21
    arrested.    We agree that the judge's reasoning is based on what
    are necessarily speculative assumptions because, by definition,
    the newly discovered evidence was not admitted at trial and not
    considered by the jury, but for reasons discussed infra, we
    conclude that the judge did not abuse his discretion in deciding
    that the exculpatory value of the new DNA evidence is far less
    significant than the defendant claims that it is.
    The defendant contends that the judge, in substance,
    ignored the factors that may have weakened or even undermined
    the reliability of Schindler's identification of the defendant,
    including -- as emphasized in the affidavit submitted by Sommers
    -- the repeated postevent exposure to information and evidence
    that, in Sommers's opinion, led to an evolving specificity of
    Schindler's identification over time.16   See generally Supreme
    Judicial Court Study Group on Eyewitness Evidence:    Report and
    Recommendations to the Justices (July 25, 2013) (study group
    report).    The judge, however, had the benefit of hearing and
    observing Schindler testify in person, and also specifically
    noted that he was aware of the factors that may affect
    eyewitness identification mentioned by Sommers.    We cannot
    conclude that the judge abused his discretion in declining to
    16
    The defendant points out that Schindler did not testify
    that the sneakers he observed the third shooter wearing were
    Nike sneakers with a trademark red swoosh until the second
    trial, after he had viewed a pair of dirty white Nike sneakers
    with a red swoosh in an evidence bag in the prosecutor's office.
    22
    question the reliability of Schindler's identification based on
    such factors.    It is also the case that the judge's instructions
    to the jury, which predated the study group report and our
    decision in Commonwealth v. Gomes, 
    470 Mass. 352
     (2015), and its
    progeny, were faithful to the identification principles set out
    in Commonwealth v. Rodriguez, 
    378 Mass. 296
    , 310-311 (1979)
    (Appendix), S.C., 
    419 Mass. 1006
     (1995), and included an
    instruction on the possibility of an honest but mistaken
    identification in accordance with Commonwealth v. Pressley, 
    390 Mass. 617
    , 619–620 (1983).    See Commonwealth v. Navarro, 
    474 Mass. 247
    , 254-255 (2016).
    Motions for a new trial are addressed to the "sound
    discretion" of the trial judge.    DiBenedetto III, 458 Mass. at
    663-664.    See L.L. v. Commonwealth, 
    470 Mass. 169
    , 185 n.27
    (2014).17   Having been the trial judge, the motion judge here, as
    he was entitled to do, clearly made "use of his knowledge of
    17
    We restated the standard for judging an abuse of
    discretion in L.L. v. Commonwealth, 
    470 Mass. 169
    , 185 n.27
    (2014), as follows:
    "An appellate court's review of a trial judge's
    decision for abuse of discretion must give great deference
    to the judge's exercise of discretion; it is plainly not an
    abuse of discretion simply because a reviewing court would
    have reached a different result. . . . [A] judge's
    discretionary decision constitutes an abuse of discretion
    where we conclude the judge made 'a clear error of judgment
    in weighing' the factors relevant to the decision . . .
    such that the decision falls outside the range of
    reasonable alternatives" (citations omitted).
    23
    what occurred at trial."   Commonwealth v. Kirwan, 
    448 Mass. 304
    ,
    315 (2007).   Although he certainly could not know what was in or
    on the minds of the jurors who decided the case, the judge was
    entitled to assess the credibility of the witnesses at trial,
    including in particular Schindler, who testified over the course
    of four days.   In the judge's view, very clearly, this was a
    case in which "[t]he strength of the case against [the]
    defendant . . . weaken[ed] the effect of evidence which is
    admittedly newly discovered."     Grace, 397 Mass. at 306.
    Considering the defendant's two claims about the impact of the
    new DNA evidence in conjunction with our own full review of the
    trial record, we cannot conclude that the judge's view reflects
    a "clear error of judgment."    L.L., supra.
    The defendant's claim that the new DNA evidence was
    "powerfully exculpatory" is premised on the belief that the
    third shooter was highly likely to have gotten one or both of
    the victims' blood on his sneakers, and that the absence of any
    DNA from the victims was strong evidence that the defendant was
    not the third shooter.   The factual basis of this premise is not
    self-evident from the record.18    Moreover, the exculpatory value
    18
    Although photographs showed pools of blood around the
    victims by the time the police arrived at and secured the crime
    scene and photographed the victims lying on the ground, there
    was no evidence as to whether or in what amount blood was
    present when the third shooter came back to where Chiuchiolo was
    lying and fired the additional shots at Chiuchiolo, and no
    24
    of the new DNA evidence is diminished by (1) the DNA examiners'
    opinions that the DNA evidence found on the sneakers was small
    and, according to the serologist, consisted of "weak and
    incomplete genetic profiles," see DiBenedetto III, 458 Mass. at
    663, 671; and (2) the fact that the sneakers had been seized by
    the police approximately eighteen years before they were tested
    and had not been stored in any type of scientifically protective
    manner.19
    The defendant's separate claim is that the prosecutor's use
    of the phenolphthalein test evidence against him at trial and
    particularly during her closing argument was likely a real
    factor in the jury's decision to find him guilty, and the DNA
    evidence concerning likely blood spatter pattern relating to
    those additional shots. It is also the case that the third
    shooter may have taken caution not to step in the areas where
    blood was visible, and that, as the judge hypothesized, if the
    defendant was the third shooter and was wearing the Nike
    sneakers at the time of the killings, he may have wiped any
    blood off the sneakers by the time they were seized after his
    arrest four days later.
    19
    The defendant's experts, Janet Hanniman and Carll Ladd,
    stated in their affidavits that DNA, if deposited on the shoes
    on the night of the shooting, would be present eighteen years
    later, but Ladd went on to clarify that that conclusion was
    based on the assumption that the sneakers were properly stored.
    The lack of proper storage, he opined, could cause more
    significant degrading of the DNA contained in the sneakers. He
    also stated that if the sneakers had been washed after the
    victims' blood was transferred to one or both of them, the
    survival of a detectable amount of DNA would depend on multiple
    factors, "including how much DNA was originally present, how
    much washing was done, and whether bleach, soap or another
    detergent was used."
    25
    evidence would have prevented the prosecutor from making such an
    argument.    We have reviewed the prosecutor's closing argument,
    including a videotape of the argument submitted by the
    defendant.    Near the end of her lengthy closing, the prosecutor
    does argue forcefully about the value of the phenolphthalein
    test evidence as concrete physical evidence corroborating the
    eyewitness testimony.20   However, the closing argument, taken as
    a whole, was not built around or centered on this point, and it
    was also clearly not the most forceful point.    The prosecutor,
    rather, focused primarily on the credibility of the
    identifications of the defendant and his codefendant, Costa,
    made by Schindler, and most particularly on the fact that
    Schindler's detailed observations about the events in the park
    and the actions of the shooters corresponded with specific
    details supplied by Storella, and both of these witnesses'
    testimony corresponded with details testified to by the medical
    examiner -- an effective triangulation of consistent evidence.
    In sum, we accept the judge's conclusion, reflected in his
    denial of the motion for a new trial, that this is not a case in
    which "justice may not have been done."    Mass. R. Crim. P. 30
    (b), as appearing in 
    435 Mass. 1501
     (2001).
    20
    See DiBenedetto III, 458 Mass. at 661-662, where this
    portion of the prosecutor's closing argument is quoted.
    26
    Conclusion.   The order denying the defendant's motion for a
    new trial is affirmed.
    So ordered.