Commonwealth v. Alcantara ( 2015 )


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    SJC-11468
    COMMONWEALTH   vs.   LEVI OMAR ALCANTARA.
    Essex.    February 6, 2015. - June 1, 2015.
    Present:   Gants, C.J., Spina, Cordy, Botsford, & Hines, JJ.
    Homicide. Evidence, Consciousness of guilt, Hearsay, Third-
    party culprit, Relevancy and materiality, Medical record,
    Privileged record, Cross-examination, Impeachment of
    credibility. Practice, Criminal, Instructions to jury,
    Hearsay, Record, Capital case. Witness, Cross-examination,
    Credibility.
    Indictments found and returned in the Superior Court
    Department on June 7, 2006.
    The cases were tried before Leila R. Kern, J.
    Jeffrey L. Baler for the defendant.
    Catherine Langevin Semel, Assistant District Attorney, for
    the Commonwealth.
    CORDY, J.   On April 22, 2006, Maria Sastre was beaten to
    death with a hammer in her home.    When one of her children,
    Jesus, attempted to intervene, he, too, was beaten with the
    hammer but was able to escape.     Soon thereafter, the defendant,
    2
    Levi Omar Alcantara, called the police from a nearby gasoline
    station claiming that he had also been a victim of the attacks
    in Maria's home.   In contrast, both Jesus and his brother,
    Christopher, identified the defendant as the assailant.     The
    handle of the hammer tested positive for the defendant's
    deoxyribonucleic acid (DNA), and red-brown stains on the
    defendant's clothing were consistent with the DNA of both Maria
    and Jesus.
    The defendant was indicted for murder in the first degree,
    assault with intent to kill, and assault and battery by means of
    a dangerous weapon.     A jury convicted him of all of the charges,
    including murder in the first degree by reason of extreme
    atrocity or cruelty.    On appeal, the defendant assigns error to
    several evidentiary rulings made by the trial judge.     We find no
    reversible error and no basis for exercising our authority under
    G. L. c. 278, § 33E, to reduce the level of guilt or to order a
    new trial.   Accordingly, we affirm the defendant's convictions.
    1.   Background.   a.   The trial.   We recite the facts that
    the jury could have found, reserving certain details for the
    issues raised on appeal.     On April 22, 2006, Jesus awoke to the
    sound of his mother screaming inside their home on Washington
    Street in Lawrence.     On further investigation, he observed a man
    beating his mother with a hammer.    Another of Maria's children,
    Christopher, then observed the assailant on top of Jesus,
    3
    beating him with the hammer.   Jesus was able to rid the
    assailant of the hammer, at which point the assailant struck him
    with a vase.    Jesus wrested himself free and ran from the home.
    Christopher then observed the assailant leave the home, jump
    over a fence, and escape down an alley.
    Jesus ran to a neighbor, who placed an emergency 911
    telephone call in which she reported that "some guy went inside
    [her] neighbor's house and he hit a little kid and he's bleeding
    out of his head . . . screaming to [her] to call the ambulance
    to help him."   Lawrence police officers responded to the scene
    and interviewed Jesus, who described the assailant as wearing a
    blue or white T-shirt and blue or dark jeans.    Jesus and
    Christopher, who were fourteen and twelve years of age,
    respectively, at the time of the assault, told the police that
    they recognized the assailant as the cousin of their mother's
    former boy friend, Ysidro Santos. 1   Maria was transported to the
    hospital, where she was pronounced dead as a result of skull
    fractures and brain lacerations caused by multiple "chop wounds"
    of the head that were consistent with blows from a hammer.
    Nineteen minutes after the neighbor's 911 call, the
    defendant placed two 911 calls in which he stated that
    1
    The defendant was known to refer to persons as his
    "cousin" regardless of any actual legal relation. Jesus and
    Christopher testified that the defendant had previously
    frequented their home with Santos and, on occasion, without him.
    4
    "something happened to [him]"; that he had been at Washington
    Street; and that he was now at a gasoline station about one-
    quarter mile away.    An officer responded to the gasoline station
    and found the defendant clad only in boxer shorts, socks, dress
    shoes, and a torn and stained blue T-shirt; with scratches on
    his face, forearms, and chest; and with a cut on his right hand.
    The defendant approached the officer and screamed, "they tried
    to kill me.    They threw me in the car and they tried to kill me,
    too."
    The defendant was transported to the police station for
    further questioning.    The defendant told the police that four
    Hispanic men entered Maria's home and beat him with a baseball
    bat and the victim with a hammer.     Two of the men then forcibly
    removed the defendant from the home, placed him in their
    automobile, removed his clothing, and robbed him.     The defendant
    stated that he subsequently was able to escape from the vehicle,
    at which point he ran to the gasoline station and placed the 911
    calls.   When the defendant was being escorted to the police
    station bathroom -- and, in the process, by an interview room
    where Christopher was sitting with the door ajar -- Christopher
    exclaimed:    "That's the guy."   Christopher and Jesus were
    subsequently presented with photographic arrays and asked if any
    of the photographs depicted the assailant.     Both Christopher and
    Jesus selected the defendant's photograph.
    5
    A request was made for Santos to submit a DNA sample, but
    Santos never submitted the sample and the police never followed
    up with him.       The police did, however, obtain DNA samples from
    the defendant, Maria, Jesus, and Christopher.       The defendant's
    DNA was consistent with a profile obtained from a red-brown
    stain on the handle of the hammer.       The handle also reflected
    DNA from an unknown person.       There was other DNA evidence
    implicating the defendant as the hammer-wielding assailant.       For
    example, a red-brown stain on the defendant's shoe was
    consistent with Maria's DNA, while a red-brown stain on the
    defendant's T-shirt was consistent with both Maria's and Jesus's
    DNA.       The police did not find the remainder of the defendant's
    clothing, which the Commonwealth attempted to explain by the
    high water level of a nearby river. 2
    The theory of the defendant's case was misidentification
    and the failure by the police to conduct an adequate
    investigation into other plausible suspects, including Santos
    and the four men mentioned in his statement at the police
    station.       The defendant highlighted discrepancies between
    Jesus's and Christopher's descriptions of the assailant, as
    compared to the clothing the defendant was wearing at the
    gasoline station and in surveillance footage from a convenience
    2
    The inference was that the defendant had discarded his
    clothing into the river.
    6
    store shortly before the attack.    The defendant also attempted,
    with varying success, to introduce evidence that Santos was a
    third-party culprit and that the police should have conducted a
    more extensive investigation into his alleged role in
    orchestrating the attack on Maria, Jesus, and, indeed, the
    defendant. 3
    b.    Suppression and admission of the custodial statement.
    Prior to trial, the defendant filed a motion to suppress the
    statements he had made at the gasoline station and police
    station.    The motion judge observed that the statement at the
    gasoline station was not made in response to police questioning
    and, therefore, was not subject to suppression.    In contrast,
    the judge concluded that the Commonwealth failed to prove that
    the custodial statement at the police station was voluntary
    beyond a reasonable doubt.    Consequently, the statement made at
    the police station was suppressed.
    At trial, however, the defendant moved to admit the
    suppressed statement as evidence of a third-party culprit,
    consciousness of innocence, and the inadequacy of the police
    investigation.    The Commonwealth objected and the judge
    initially denied the motion, ruling that, even if the defendant
    3
    A voir dire was held in which a State trooper testified
    that he interviewed Santos on the day of the attack. Santos
    confirmed that he was Maria's boy friend, but averred that he
    was with his parents at the time of the attack.
    7
    could waive his constitutional right to the suppression, the
    statement constituted inadmissible hearsay.   The Commonwealth
    then withdrew its objection to the statement with respect to the
    adequacy of the police investigation, prompting the judge to
    admit the statement only for that limited purpose.   The judge
    then instructed the jury that the statement was "permitted to be
    introduced by the defendant only as it bears on the police
    investigation of this case.   So it should be clear that the
    Commonwealth had no choice, they were not permitted to introduce
    this during their case-in-chief."
    During the charge conference, the Commonwealth requested a
    consciousness of guilt instruction referencing several
    statements that the defendant had made to the police.     The
    defendant objected to the use of the custodial statement for
    this purpose, as it had only been admitted for the purpose of
    challenging the police investigation.   The judge disagreed,
    stating to counsel that "once the Commonwealth withdrew its
    objection to the custodial statements it obviously mooted or
    made moot that limiting instruction."   The judge later
    instructed the jury:
    "You've heard evidence suggesting that the defendant may
    have made false statements; that is, he may have
    intentionally made certain false statements around the time
    of his arrest. If the Commonwealth has proven the
    defendant did make those statements, you may consider
    whether such actions indicate feelings of guilt by the
    8
    defendant and whether in turn such feelings of guilt might
    tend to show actual guilt on these charges."
    c.   Midtrial hearings.   During the trial, a hearing was
    held to determine the admissibility of a statement by a local
    convenience store clerk that there was "hearsay in the
    neighborhood" that Santos had stated that Maria "deserved what
    she got."   In addition, a voir dire hearing was conducted to
    determine whether the statements of Maria's daughter, Chabley,
    and the godfather of Maria's children could be introduced
    through the testimony of two State police officers as evidence
    of a third-party culprit or inadequate police investigation.
    Trooper Brian O'Neil testified that the neighbor gave him a
    handwritten statement stating that Chabley had told the neighbor
    that "her mother's boyfriend had threatened the mother.    He told
    her to watch her back, that one of these days something bad was
    going to happen to her."   Lieutenant James Dowling testified
    that the godfather told him that Chabley had said "that [Y]sidro
    Santos stated that he was going to have her mother killed
    because she did not want to be with him anymore."    Although, at
    first, the godfather told Lieutenant Dowling that Chabley told
    him this directly, the godfather later stated that he had heard
    it from another person who had heard it from Chabley.     The
    judge concluded that each of these statements was unreliable
    and, thus, inadmissible at trial.
    9
    2.   Discussion.   a.   Consciousness of guilt instruction.
    The defendant contends that the judge erred in allowing his
    custodial statement to be considered as evidence of
    consciousness of guilt, where the judge previously instructed
    the jury that the statement was only admissible insofar as it
    reflected on the adequacy of the police investigation.     See
    generally Commonwealth v. Bowden, 
    379 Mass. 472
    , 485-486 (1980).
    Because his challenge to the instruction was preserved at trial,
    we review the claim for prejudicial error.     Commonwealth
    v. Burgos, 
    462 Mass. 53
    , 67, cert. denied, 
    133 S. Ct. 796
    (2012).
    "A consciousness of guilt instruction is permissible where
    'there is an inference of guilt that may be drawn from evidence
    of flight, concealment, or similar acts, such as false
    statements to the police, destruction or concealment of
    evidence, or bribing or threatening a witness.'"    
    Id.,
    quoting Commonwealth v. Stuckich, 
    450 Mass. 449
    , 453 (2008).
    "False statements to police may be considered as consciousness
    of guilt if there is other evidence tending to prove the falsity
    of the statements."     Commonwealth v. Robles, 
    423 Mass. 62
    , 71
    (1996).   Such statements are not ensnared by the rule against
    hearsay because they are offered not for their truth, but for
    the proposition that the defendant's "version of events was
    10
    intended to be a lie."   Commonwealth v. Caillot, 
    454 Mass. 245
    ,
    256 (2009), cert. denied, 
    559 U.S. 948
     (2010).
    Here, the Commonwealth presented evidence, apart from the
    defendant's custodial statement, warranting a consciousness of
    guilt instruction.   The defendant's statements at the gasoline
    station and during the 911 calls portrayed a version of events
    in stark contrast to the testimony of the victim's children.
    According to the defendant, the perpetrators kidnapped him and
    attempted to kill him.   According to Jesus and Christopher,
    however, the defendant was the perpetrator.   If the jury
    accepted the children's version of the events, then the
    defendant's statements reflected an attempt to lie to the police
    about his role in the killing and assault.    See 
    id.
    Consequently, it was not error for the judge to instruct the
    jury that they could consider the defendant's statements as
    evidence of consciousness of guilt if the Commonwealth proved
    that the statements were false.   See Commonwealth v. Martin, 
    467 Mass. 291
    , 308-309 (2014) (erroneous admission of cumulative
    consciousness of guilt evidence not prejudicial error).
    Nonetheless, as the Commonwealth concedes, the judge's
    ruling that the consciousness of guilt instruction could also
    encompass the defendant's custodial statement was inconsistent
    with her prior ruling and instruction limiting that statement's
    use to the adequacy of the police investigation.   The
    11
    prosecutor's discussion of consciousness of guilt during closing
    argument, however, was focused on the defendant's missing
    clothing, his 911 calls, and his statement at the gasoline
    station.   In contrast, the prosecutor's use of the defendant's
    custodial statement in her closing focused the jury specifically
    on the reasonableness of the police response to the information
    the defendant had provided. 4   See Commonwealth v. Rivera, 
    425 Mass. 633
    , 643 (1997) (prosecutor's closing argument did not
    guide jury to prohibited inference). 5
    Moreover, the judge did not share with the jury her ruling
    that the statement was available to be used for consciousness of
    guilt purposes, nor, in her final instructions, did she
    explicitly invite the jury to draw a connection between the
    custodial statement and consciousness of guilt.    Although the
    better practice would have been for the judge to have reminded
    the jury that they could consider that statement only as
    4
    The prosecutor posed to the jury, "So the police, what do
    the police do. . . . The police interview the defendant. And
    he makes a number of statements to them. And you can consider,
    I think when you consider the police investigation in this case,
    whether they made any sense. They had spoken to Jesus Mandes,
    and they had spoken to Christopher Mandes. They had that
    information. . . . His story simply didn't make sense, and the
    police, I would suggest, understood that."
    5
    In his closing argument, defense counsel contended that
    the defendant's willingness to speak to the police at the police
    station, "after they tell him, look, you have a right [not to
    say anything]," and "a right to a lawyer," was consistent with
    his innocence.
    12
    evidence of the adequacy of the police investigation, "[w]e
    presume that a jury follow all instructions given to
    it."       Commonwealth v. Watkins, 
    425 Mass. 830
    , 840 (1997).   As
    far as the jury knew, the prior limiting instruction remained in
    effect and the custodial statement was not part of the
    Commonwealth's case.      Thus, to the extent the judge's ruling on
    consciousness of guilt constituted error, 6 the error "did not
    6
    At trial, the defendant argued that he was entitled to use
    the suppressed statement as a shield, but that the Commonwealth
    remained constitutionally precluded from using the statement as
    a sword against him. Although the judge appeared to accept this
    argument initially, we are not aware of any direct support for
    it in the case law. As one commentator has explained:
    "By introducing evidence obtained illegally, the defendants
    should also waive their rights to exclude other evidence
    obtained in the same unlawful search, seizure, or
    interrogation as that which yielded the evidence they
    introduce. It does not advance the goal of protecting
    affected defendants from the consequences of those
    constitutional violations if they are not so much objecting
    to the violation of their rights as trying to take
    strategic advantage of it with evidence they would not
    otherwise have. While they undoubtedly would prefer to
    take advantage of suppression to use any exculpatory proof
    gathered illegally while excluding the inculpatory proof,
    there is no justification for allowing them to do so. . . .
    A defendant insisting in good faith on protection from the
    consequences of authorities' illegality is hard pressed to
    claim that he is entitled to exploit those consequences
    selectively. . . ."
    Kainen, Shields, Swords, and Fulfilling the Exclusionary Rule's
    Deterrent Function, 
    50 Am. Crim. L. Rev. 59
    , 92 (2013). These
    principles have found general application both in the
    Commonwealth and in other jurisdictions. See, e.g.,
    Commonwealth v. Redmond, 
    357 Mass. 333
    , 341 (1970) (in insisting
    his attorney question witness concerning certain events,
    defendant "lost the benefit of the earlier order suppressing
    13
    influence the jury, or had but very slight
    effect."    Commonwealth v. Bresilla, 
    470 Mass. 422
    , 440 (2015),
    quoting Commonwealth v. Gambora, 
    457 Mass. 715
    , 729 (2010).
    b.    Admission of the neighbor's 911 call.   The neighbor's
    911 call, in which she stated that "some guy went inside [her]
    evidence"); United States v. Pierson, 
    101 F.3d 545
    , 546 (8th
    Cir. 1996), cert. denied, 
    520 U.S. 1202
     (1997) (defendant opened
    door to government's use of inculpatory statement previously
    suppressed on Miranda grounds); Pettijohn v. Hall, 
    599 F.2d 476
    ,
    481 (1st Cir.), cert. denied, 
    444 U.S. 946
     (1979) ("Once a
    defendant attempts to introduce testimony that is intimately
    interrelated with previously suppressed testimony, the defendant
    waives his objections to the introduction of that related
    evidence"); State v. James, 
    144 N.J. 538
    , 562-563 (1996)
    (defendant may not selectively introduce suppressed evidence
    without allowing government opportunity to place evidence in
    proper context).
    Yet, there is a tension in applying these principles to a
    defendant's use of statements already deemed involuntary. On
    one hand, involuntary statements are considered unreliable and
    incompetent evidence, repugnant to due process and inadmissible
    for any purpose at trial. Commonwealth v. Durand, 
    457 Mass. 574
    , 591-592 & n.22 (2010). On the other hand, prior to the
    voluntariness determination, a defendant may waive the issue by
    using the purportedly involuntary statements, thereby opening
    the door to their use by the Commonwealth. Commonwealth v.
    Williams, 
    379 Mass. 600
    , 604-605 (1980). Assuming without
    deciding that the defendant was properly allowed to waive
    voluntariness altogether and introduce the statement after
    prevailing on his motion to suppress, it was not constitutional
    error to allow the Commonwealth to respond by arguing that the
    statement was false. See 
    id. at 606
     ("When a defendant, acting
    through competent counsel, puts particular evidence in issue, he
    may not effectively argue on appeal that his own trial strategy
    denied him his constitutional rights"); Commonwealth v.
    Pettijohn, 
    373 Mass. 26
    , 31 (1977) ("We assume without deciding
    that the defendant is correct in his premise that, having
    prevailed on the motion to suppress . . . the defendant was
    privileged to make a timely waiver of his rights as to the
    entire suppression issue").
    14
    neighbor's house and he hit a little kid," was admitted in
    evidence over the defendant's objection.    The defendant conceded
    that the majority of the statement was admissible as an excited
    utterance, see Mass. G. Evid. § 803(2) (2014), but that the
    words "some guy" constituted inadmissible hearsay because they
    were not based on the neighbor's personal knowledge.    The
    defendant renews this argument on appeal, contending that its
    admission improperly undermined his narrative of four men
    entering the house to commit the killing.   We review for
    prejudicial error.    Commonwealth v. Middlemiss, 
    465 Mass. 627
    ,
    631 (2013).
    "The broad rule on hearsay evidence interdicts the
    admission of a statement made out of court which is offered to
    prove the truth of what it asserted."   Commonwealth v. DelValle,
    
    351 Mass. 489
    , 491 (1966), S.C., 
    353 Mass. 684
     (1968).    However,
    a statement is admissible as an excited utterance, "if (1) there
    is an occurrence or event 'sufficiently startling to render
    inoperative the normal reflective thought processes of the
    observer,' and (2) if the declarant's statement was a
    'spontaneous reaction to the occurrence or event and not the
    result of reflective thought.'"   Commonwealth v. Santiago, 
    437 Mass. 620
    , 623 (2002), quoting 2 McCormick, Evidence § 272, at
    204 (5th ed. 1999).   "Generally, evidence based on a chain of
    statements is admissible only if each out-of-court assertion
    15
    falls within an exception to the hearsay rule."    Commonwealth
    v. McDonough, 
    400 Mass. 639
    , 643 n.8 (1987).
    Here, the neighbor's statement made on the 911 call in the
    presence of the bleeding and screaming child was clearly
    admissible as an excited utterance.    See Middlemiss, 465 Mass.
    at 631 & n.4 (victim's 911 call seeking assistance admissible as
    excited utterance); Commonwealth v. Harbin, 
    435 Mass. 654
    , 657
    (2002) (bystander declaration admissible as excited utterance).
    However, the neighbor did not observe "some guy" strike Jesus.
    As such, that portion of the statement constituted totem pole
    hearsay requiring its own exception to the hearsay rule.
    See McDonough, 
    supra.
        See also Commonwealth v. King, 
    436 Mass. 252
    , 255 (2002) ("declarant must have personal knowledge of the
    event in question").    At the hearing on this issue, defense
    counsel contended that it was Jesus who relayed this information
    to the neighbor. 7   The judge replied aptly that the statement of
    a child "who is standing in front of [the neighbor] bleeding
    from his head" is likewise encompassed by the excited utterance
    7
    Although the defendant now argues that the identity of the
    third-party declarant is unknown, the evidence supports the
    position taken at trial. During the 911 call, the neighbor
    asked, "What guy?" to a person in her presence. In light of the
    fact that the neighbor also described Jesus as presently
    bleeding from his head and screaming to her for help, it is at
    least a reasonable inference that her question was in response
    to his statement that a "guy" had struck him. Indeed, the
    defendant used this to his advantage during closing argument by
    pointing out that Jesus was unable to answer the neighbor's
    question.
    16
    exception.    See Commonwealth v. Snell, 
    428 Mass. 766
    , 777, cert.
    denied, 
    527 U.S. 1010
     (1999) (victim's statements to neighbor
    immediately after defendant tried to kill her admissible as
    excited utterance).    There was no error.   See King, supra at 257
    (judge has broad discretion to determine whether prerequisites
    for excited utterance have been met).
    c.   Exclusion of third-party culprit evidence.     The
    defendant contends that the judge erred in preventing him from
    introducing the testimony of Trooper O'Neil, Lieutenant Dowling,
    and the convenience store clerk, as well as the defendant's own
    statement at the police station, as third-party culprit
    evidence.    We disagree.
    "A defendant has a constitutional right to present evidence
    that another may have committed the crime."    Commonwealth
    v. Conkey, 
    443 Mass. 60
    , 66 (2004), S.C., 
    452 Mass. 1022
     (2008).
    Consequently, we afford "wide latitude" to such
    evidence, Commonwealth v. Silva-Santiago, 
    453 Mass. 782
    , 800
    (2009), insofar as it tends to show that another person "had the
    motive, intent, or opportunity to commit it."     
    Id.,
    quoting Commonwealth v. Lawrence, 
    404 Mass. 378
    , 387 (1989).
    However, "because the evidence is offered for the truth of the
    matter asserted -- that a third party is the true culprit -- we
    have permitted hearsay evidence that does not fall within a
    hearsay exception only if, in the judge's discretion, 'the
    17
    evidence is otherwise relevant, will not tend to prejudice or
    confuse the jury, and there are other "substantial connecting
    links" to the crime.'"   Silva-Santiago, supra at 801,
    quoting Commonwealth v. Rice, 
    441 Mass. 291
    , 305 (2004).
    Moreover, "the evidence, even if it is not hearsay, 'must have a
    rational tendency to prove the issue the defense raises, and the
    evidence cannot be too remote or speculative.'"   Silva-
    Santiago, supra, quoting Commonwealth v. Rosa, 
    422 Mass. 18
    , 22
    (1996).
    Here, defense counsel essentially conceded that the store
    clerk's testimony repeated an unsubstantiated rumor lacking in
    evidentiary value.   See Commonwealth v. Bizanowicz, 
    459 Mass. 400
    , 418-419 (2011) (defendant not entitled to base third-party
    culprit defense on rumor).   With respect to Trooper O'Neil's
    testimony, the judge observed that there was no evidence as to
    when Santos made the alleged statements to Chabley.
    See Commonwealth v. Hunter, 
    426 Mass. 715
    , 716-717 (1998),
    quoting Commonwealth v. Keizer, 
    377 Mass. 264
    , 267 (1979) ("acts
    of the other person [must be] so closely connected in point of
    time and method of operation as to cast doubt upon the
    identification of [the] defendant as the person who committed
    the crime").   With respect to Lieutenant Dowling's testimony,
    the judge concluded that Loriano's statement was unreliable
    because of the variations and multiple levels of hearsay.
    18
    See Commonwealth v. Cassidy, 
    470 Mass. 201
    , 216 (2014) (layered
    hearsay with uncertain sources unreliable and inadmissible as
    third-party culprit evidence).    See also Commonwealth
    v. O'Brien, 
    432 Mass. 578
    , 589 (2000) ("testimony would have no
    tendency to prove that [a third party] was actually the
    murderer, and would be confusing as no more than an opinion of
    [the third party's] involvement").    The defendant's
    constitutional rights were not violated by the exclusion of the
    various hearsay statements implicating Santos.
    It was likewise proper for the judge to exclude the
    defendant's custodial statement as third-party culprit evidence.
    The "substantial connecting links" between Santos and the
    killing were clearly lacking in this case, where the only
    admissible evidence of motive or intent was that Santos and
    Maria had recently ended their relationship.    See Commonwealth
    v. Wright, 
    469 Mass. 447
    , 466 (2014) (evidence of former boy
    friend's ill will or possible motive insufficient to support
    third-party culprit defense).    Moreover, the only evidence
    supporting the defendant's version of the events involving the
    four unidentified assailants was his own self-serving statement.
    See Williamson v. United States, 
    512 U.S. 594
    , 600 (1994)
    ("Self-exculpatory statements are exactly the ones which people
    are most likely to make even when they are false").     Although it
    is possible that the police would have discovered additional
    19
    evidence had they conducted a more thorough investigation, their
    failure to do so was admissible for Bowden, rather than third-
    party culprit, purposes.    Silva-Santiago, 453 Mass. at 802-803.
    The judge was within her discretion to so limit the defendant's
    use of that statement to the adequacy of the police
    investigation. 8   See id. at 801 ("admission of feeble third-party
    culprit evidence poses a risk of unfair prejudice to the
    Commonwealth").
    d.   Exclusion of evidence undermining police investigation.
    The defendant next argues that the judge abused her discretion
    in failing to allow the defendant to introduce evidence of an
    inadequate police investigation.    The defendant assigns error to
    the exclusion of the following:    (i) the exclusion of the
    defendant as a source of the DNA found in Maria's vaginal cells;
    (ii) the presence of illegal drugs in Maria's body revealed
    8
    Moreover, the defendant was not precluded from presenting
    a third-party culprit defense to the jury. The jury heard
    evidence, which defense counsel reinforced in closing argument,
    that there was deoxyribonucleic acid (DNA) of an unknown person
    on the hammer; that there was hair from an unknown person found
    in Maria's fingernail scrapings; that Santos and Maria had
    recently ended their relationship; that Maria's blood was not
    found on the defendant's hands; that the defendant purported to
    be a victim of the attacks in his 911 calls and gasoline station
    statement; and that Jesus's and Christopher's descriptions of
    the assailant's clothing were inconsistent with the clothing the
    defendant was depicted wearing in surveillance footage recorded
    shortly before the killing. See Commonwealth v. Bizanowicz, 
    459 Mass. 400
    , 419 (2011) ("Nor did the judge's exclusion of these
    statements deprive the defendant of the ability to present a
    defense suggesting that [the third party] was the killer").
    20
    during her autopsy; and (iii) the testimony of Trooper O'Neil
    and Lieutenant Dowling that Chabley said that Santos made
    threatening statements about Maria.    These claims are without
    merit.
    "Defendants have the right to base their defense on the
    failure of police adequately to investigate a murder in order to
    raise the issue of reasonable doubt as to the defendant's guilt
    in the minds of the jury."   Commonwealth v. Phinney, 
    446 Mass. 155
    , 165-166 (2006), S.C., 
    448 Mass. 621
     (2007).    "[T]he
    inference that may be drawn from an inadequate police
    investigation is that the evidence at trial may be inadequate or
    unreliable because the police failed to conduct the scientific
    tests or to pursue leads that a reasonable police investigation
    would have conducted or investigated, and these tests or
    investigation reasonably may have led to significant evidence of
    the defendant's guilt or innocence."    Silva-Santiago, 453 Mass.
    at 801.   This generally is referred to as the Bowden defense.
    See generally Bowden, 
    379 Mass. at 486
    .    Where, as here, the
    defendant asserts a Bowden defense, the trial judge must
    determine "whether the probative weight of the Bowden evidence
    exceed[s] the risk of unfair prejudice to the Commonwealth from
    diverting the jury's attention to collateral matters."       Silva-
    Santiago, supra at 803.   "[T]he exclusion of evidence of
    a Bowden defense is not constitutional in nature and therefore
    21
    is examined under an abuse of discretion standard."    Id. at 804
    n.26.
    Here, the judge held hearings to determine the
    admissibility of the proposed Bowden evidence.    The sperm and
    drug evidence was lacking in probative value.    There was no
    indication that Maria, who was found fully clothed, was engaged
    in sexual intercourse around the time of the attack, nor was
    there any evidence whatsoever suggesting that the killing arose
    from a sexual relationship.   The judge did not abuse her
    discretion in ruling that the proposed evidence was likely to
    confuse the jury.   Cf. Commonwealth v. Nesbitt, 
    452 Mass. 236
    ,
    254 (2008) ("for inconclusive DNA evidence to be admissible, it
    must be probative of an issue of consequence in the case").
    Similarly, the judge did not abuse her discretion in ruling that
    the drug evidence was not probative of police thoroughness,
    where there was no indication that the drugs or supplier of the
    drugs played any role in causing Maria's death.
    Cf. Commonwealth v. Reynolds, 
    429 Mass. 388
    , 401 (1999) ("bare
    statement that [a third party] and the victim dealt drugs
    together lacks probative quality and would merely mislead the
    jury").
    Moreover, as previously stated, it was within the judge's
    discretion to exclude the unreliable evidence of Santos's
    threats.   The defendant may not bootstrap that unreliable
    22
    evidence into a claim that the police haphazardly failed to
    confirm Santos's alibi, where the police had two eyewitnesses --
    each of whom knew both the defendant and Santos -- who
    identified the defendant as the only assailant.    As
    in Commonwealth v. Wood, 
    469 Mass. 266
    , 278 (2014), where the
    only reliable evidence implicating a third party in the killing
    was a deteriorated relationship with the victim, the judge
    properly excluded the evidence as more prejudicial than
    probative.
    In any event, the defendant "was permitted to challenge the
    adequacy of the investigation as a whole," 
    id.,
     including the
    failure of the police to follow up with Santos for testing in
    connection with the unidentified DNA on the hammer and in
    Maria's finger nail scrapings.   See note 8, supra.     The jury
    were also allowed to hear the defendant's custodial statement,
    in which he described the four men that he alleged committed the
    killing and assaults.    During closing argument, defense counsel
    vigorously argued these points, as well as the inconsistencies
    between the eyewitness descriptions of the assailant and the
    clothing the defendant was observed wearing prior to and
    following the killing.   "Thus, where the issue of an inadequate
    investigation was fairly before the jury, the defendant suffered
    no prejudice from the exclusion of the proffered
    evidence."   Wood, supra.
    23
    e.      Access to Christopher's treatment records.   During
    empanelment, the Commonwealth became aware that one of its
    witnesses, Christopher, had been committed to a psychiatric
    hospital in Florida on more than one occasion following the
    killing. 9    The Commonwealth informed the defendant, prompting him
    to seek discovery of the treatment records on grounds that the
    information contained therein might reflect an impaired ability
    to recall the events in question.     The judge denied the motion,
    ruling that the mere fact of subsequent psychiatric assistance
    does not, by itself, constitute the necessary evidentiary
    showing to allow a defendant access to a witness's treatment
    records. 10
    On appeal, the defendant appears to argue that showing a
    potential for uncovering relevant information is sufficient to
    compel access to statutorily privileged treatment records.         That
    9
    Christopher was committed to psychiatric care pursuant to
    a Florida law allowing for the hospitalization of an individual
    at the request of a mental health professional, judge, or law
    enforcement official, if believed that the person suffers from a
    mental illness and poses a significant risk of harm to either
    himself or herself or other people.
    10
    In denying the defendant's motion, the trial judge noted
    that the evidence could become admissible if the Commonwealth
    opened the door by suggesting that Christopher's condition was
    triggered by the traumatic experience of finding his mother
    beaten to death and his brother badly injured. During the
    hearing, the Commonwealth indicated that it had no intention of
    doing so.
    24
    is not the law.   A party seeking to access statutorily
    privileged treatment records must:
    "establish good cause, satisfied by a showing '(1) that the
    documents are evidentiary and relevant; (2) that they are
    not otherwise procurable reasonably in advance of trial by
    exercise of due diligence; (3) that the party cannot
    properly prepare for trial without such production and
    inspection in advance of trial and that the failure to
    obtain such inspection may tend unreasonably to delay the
    trial; and (4) that the application is made in good faith
    and is not intended as a general "fishing expedition."'"
    Commonwealth v. Sealy, 
    467 Mass. 617
    , 627 (2014),
    quoting Commonwealth v. Lampron, 
    441 Mass. 265
    , 269 (2004).
    Relevance is merely one factor in the analysis, and it is
    not established by rank speculation. 11   See Sealy, supra at 628.
    Compare Commonwealth v. Bourgeois, 
    68 Mass. App. Ct. 433
    , 437
    (2007) ("broad claims concerning the victim's lack of
    credibility as a result of mental health problems are entirely
    speculative and lack the specificity and reasonableness
    required"), with Commonwealth v. Labroad, 
    466 Mass. 1037
    , 1039
    (2014) ("Unlike in Bourgeois, [supra,] the defendant in this
    case alleged, with particularity, that the [victim's]
    11
    For example, one might speculate that a child who finds
    his mother beaten to death with a hammer would be prompted to
    seek psychiatric assistance as a result. Cf. Commonwealth v.
    Bourgeois, 
    68 Mass. App. Ct. 433
    , 438 (2007) ("references to
    various psychiatric and other problems the victim appeared to be
    experiencing all occurred at or about the time she revealed the
    abuse and reasonably could be viewed as a consequence of the
    defendant's abuse"). Yet, it is unclear, absent some further
    showing, how this would be relevant to the witness's capacity to
    perceive or recall the underlying event.
    25
    psychological records contained specific information regarding
    her complaint of sexual assault").    Moreover, the defendant does
    not even offer an argument on appeal as to the remaining factors
    germane to the analysis.    See Lampron, supra.   In consequence,
    we cannot say that the judge erred in denying the defendant
    access to Christopher's treatment records.
    f.   Limitation on cross-examination of Christopher.      During
    the defendant's cross-examination of Christopher, the defendant
    sought to impeach the witness's credibility by inquiring into
    his use of prescription antipsychotic drugs around the time of
    the incident.    Notwithstanding the fact that he was unsure
    whether Christopher was actually taking such drugs at the time
    of the incident, defense counsel argued that the subject was
    fodder for cross-examination because drug use could adversely
    affect Christopher's ability to perceive or recall the events in
    question.   The judge found no evidence countermanding the clear
    recall exhibited by Christopher and, as a result, barred defense
    counsel from exploring the witness's drug use on cross-
    examination.    The defendant assigns error to this ruling.    We
    are not persuaded.
    A witness may "be impeached by evidence challenging his
    testimonial facilities (e.g., ability to perceive the events or
    remember them accurately)."    Commonwealth v. Daley, 
    439 Mass. 558
    , 564 (2003).    "While defendants are entitled to reasonable
    26
    latitude on cross-examination, the scope of such cross-
    examination, including the extent of impeachment of a witness
    for credibility and competency, are well within the judge's
    sound discretion."   Commonwealth v. Carrion, 
    407 Mass. 263
    , 273
    (1990).   Evidence of a witness's use of legal or illegal drugs
    is admissible on cross-examination if it would demonstrate an
    impaired ability by the witness "to perceive and to remember
    correctly."   
    Id. at 273-274
    .   However, the party seeking
    admission of such evidence must show a connection between the
    drug use and the witness's ability to perceive, remember, or
    testify to the event in question.    Commonwealth v. Caine, 
    366 Mass. 366
    , 369 (1974).
    In the present case, the defendant did not introduce any
    evidence that Christopher was on psychiatric medication at the
    time of the incident other than an averment that the defendant
    believed it to be so.    Even if Christopher had been prescribed
    psychiatric medication at or around the time of the incident,
    there was no evidence to show that it would have impaired his
    ability to perceive or recall the incident.    Thus, the defendant
    failed to establish the requisite nexus between Christopher's
    alleged antipsychotic medication use and any possible
    impairment.   See Commonwealth v. Arce, 
    426 Mass. 601
    , 604 (1998)
    ("evidence of the use of drugs is not alone sufficient to show
    that drug usage adversely affected [a witness's] perception and
    27
    memory").   See also Caine, 
    supra at 370
     (mere fact that witness
    was committed to State hospital insufficient to compel testimony
    regarding alleged habitual intoxication and drug addiction).
    The trial judge did not abuse her discretion in limiting the
    defendant's cross-examination on this point.
    g.   General Laws c. 278, § 33E.   We have reviewed the
    record in accordance with G. L. c. 278, § 33E, and have found no
    basis to set aside or reduce the verdict of murder in the first
    degree or to order a new trial.
    Judgments affirmed.