Commonwealth v. Cassino , 474 Mass. 85 ( 2016 )


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    SJC-11684
    COMMONWEALTH   vs.   ADAM CASSINO.
    Suffolk.       December 11, 2015. - April 8, 2016.
    Present:    Gants, C.J., Cordy, Botsford, Lenk, & Hines, JJ.
    Homicide. Search and Seizure, Clothing, Warrant, Probable
    cause. Constitutional Law, Search and seizure, Probable
    cause. Probable Cause. Deoxyribonucleic Acid. Mental
    Impairment. Jury and Jurors. Practice, Criminal, Capital
    case, Motion to suppress, Instructions to jury, Voir dire,
    Jury and jurors.
    Indictment found and returned in the Superior Court
    Department on November 15, 2011.
    Pretrial motions to suppress evidence were heard by Charles
    J. Hely, J., and the case was tried before Garry V. Inge, J.
    Azi Safar for the defendant.
    Zachary Hillman, Assistant District Attorney (Ian
    Polumbaum, Assistant District Attorney, with him) for the
    Commonwealth.
    HINES, J.    In August, 2011, a sixty-five year old woman was
    found dead in her apartment in the South Boston section of
    Boston.   She was the victim of blunt force trauma caused by a
    2
    baseball bat.   The defendant, Adam Cassino, was indicted for the
    crime and a jury convicted him of murder in the first degree on
    theories of deliberate premeditation and extreme atrocity or
    cruelty.   On appeal, the defendant claims (1) error in the
    denial of his three motions to suppress evidence stemming from a
    claimed illegal search of his clothing and shoes that were
    stored in a secured area while he was civilly committed pursuant
    to G. L. c. 123, § 35; (2) error in the presentation of
    deoxyribonucleic acid (DNA) results; (3) error in the failure to
    give a diminished capacity instruction; and (4) abuse of
    discretion in the judge's juror bias determination.     We affirm
    the order denying the defendant's motions to suppress as well as
    the defendant's convictions, and we discern no basis to exercise
    our authority pursuant to G. L. c. 278, § 33E.
    1.    Motion to suppress.   a. Background.   After the
    discovery of the victim's body on August 27, 2011, the police
    investigation soon focused on the defendant, the victim's
    neighbor, as a possible suspect.    The investigation led police
    to the Massachusetts Alcohol and Substance Abuse Center (center)
    where the defendant had resided since August 24, 2011, after
    being civilly committed for drug treatment under G. L. c. 123,
    § 35.   On August 29, 2011, two days after the discovery of the
    body, two Boston police detectives went to the center to
    interview the defendant.   While there, the detectives viewed the
    3
    defendant's clothing and shoes and observed reddish brown stains
    on the shoes.   On August 31, 2011, police applied for and
    obtained a warrant seeking the authority to search and seize the
    clothing and shoes.   The affidavit submitted in support of the
    warrant application referenced the reddish brown stains.     Later
    that same day, police seized the items from the center pursuant
    to the warrant.
    On September 8, 2011, police submitted applications for two
    additional search warrants, one pertaining to the apartment
    where the defendant stayed on August 23, 2011, the night before
    he was apprehended for the G. L. c. 123, § 35, civil commitment
    and the other for the defendant's primary residence.   The
    affidavits accompanying both applications cited the forensic
    evidence obtained from the defendant's shoes, including that DNA
    samples from the reddish brown stains matched the known DNA
    profile of the victim.
    The defendant filed three motions to suppress, claiming, on
    State and Federal constitutional grounds, that the viewing of
    his clothing and shoes at the center was an illegal, warrantless
    search and that the three subsequent search warrants for the
    shoes and the two residences, based on that illegal "search,"
    lacked probable cause.   As background for the analysis of this
    issue, we summarize the relevant facts from the affidavit
    submitted in support of the warrant application dated August 31,
    4
    2011, and from the undisputed testimony adduced at the hearing
    on the motion to suppress.
    The last known contact with the victim occurred Monday
    evening, August 22, 2011, and the last outgoing call from her
    cellular telephone was the next afternoon.    Police estimated
    that the murder occurred sometime between Monday and Tuesday
    evenings.   During a search of the victim's apartment, police
    seized an empty bottle of Clonazepam that was issued to the
    victim on August 11, 2011, and initially contained ninety pills.
    Police believed, based on witness interviews,1 that the victim
    had been having ongoing problems with the defendant and that he
    had stolen her prescription medication and other belongings in
    the past.   A neighbor reported that the defendant stole
    prescription medicine from her that Monday.   The defendant told
    police that he met with the victim that Monday evening to
    discuss buying pills.   He stated that he would have purchased
    some, but he did not have any money.
    Blood on the victim's hands and nails indicated that she
    struggled with, and possibly caused injury to, her attacker.
    1
    The affidavit does not state whether these interviews
    occurred before or after detectives spoke with the defendant and
    viewed his personal property at the Massachusetts Alcohol and
    Substance Abuse Center (center) on August 29, 2011. The
    Commonwealth may rely on evidence obtained before or after an
    illegal search if it can show that the evidence was
    independently obtained. Commonwealth v. Estabrook, 
    472 Mass. 852
    , 868 n.26 (2015).
    5
    Moreover, the police asserted in the search warrant affidavit
    that "the damage to the victim coupled by the amount of blood
    throughout the scene showed an extreme force which would have
    made it very difficult for any person involved, or even present,
    to avoid a transfer of some blood evidence to either themselves
    or their clothing or footwear."
    The defendant's mother told police that the defendant was
    taken into custody for civil commitment on a warrant of
    apprehension on August 24, 2011, a process she started the day
    before because of the defendant's substance abuse.   The
    defendant arrived at the center with injuries to his hand and
    knee.    The inner perimeter security commander for the center
    testified that booking and admission procedures require that the
    clothing and shoes of a person committed under G. L. c. 123,
    § 35, be taken and stored in a secure property storage area.
    Property is returned to its owner after discharge, or it is
    transferred to follow the owner to any future confinement.
    On August 29, 2011, two Boston police detectives
    interviewed the defendant at the center and requested to view
    the defendant's personal property.2   A sergeant retrieved the
    2
    The Commonwealth contests the motion judge's finding that
    the viewing occurred at the request of the detectives, asserting
    a lack of evidence to support this finding. We are not
    persuaded that the finding is clearly erroneous because the
    affidavit supporting one of the September 8 warrant applications
    6
    property from the storage facility, opened the bag containing
    the defendant's clothing and shoes, and lifted the items out of
    the bag so that the detectives could view the items.    As noted,
    reddish brown stains were visible on the defendant's shoes.
    b.   Discussion.   "In reviewing a ruling on a motion to
    suppress, we accept the judge's subsidiary findings of fact
    absent clear error 'but conduct an independent review of [his]
    ultimate findings and conclusions of law.'"    Commonwealth v.
    Craan, 
    469 Mass. 24
    , 26 (2014), quoting Commonwealth v. Scott,
    
    440 Mass. 642
    , 646 (2004).    We "make an independent
    determination of the correctness of the judge's application of
    constitutional principles."    Commonwealth v. Woods, 
    466 Mass. 707
    , 717, cert. denied, 
    134 S. Ct. 2855
     (2014), quoting
    Commonwealth v. Mercado, 
    422 Mass. 367
    , 369 (1996).
    The judge denied the defendant's motions, concluding that
    the defendant had no reasonable expectation of privacy in the
    clothing and shoes when the officers first observed them at the
    center and that all three warrants were supported by probable
    cause.   On appeal, the defendant reprises his argument that the
    viewing of his personal items was a warrantless search that
    unlawfully infringed on his reasonable expectation of privacy
    and tainted the three warrant applications.
    stated that the detectives requested a view of the defendant's
    property.
    7
    "Warrantless searches are presumptively unreasonable, under
    both the Fourth Amendment to the United States Constitution and
    art. 14 of the Massachusetts Declaration of Rights, subject only
    to 'a few specifically established and well-delineated
    exceptions.'"   Commonwealth v. Gouse, 
    461 Mass. 787
    , 792 (2012),
    quoting Commonwealth v. Bostock, 
    450 Mass. 616
    , 624 (2008).
    The defendant bears the "burden of showing that a warrantless
    search or seizure occurred."   Commonwealth v. Bly, 
    448 Mass. 473
    , 490 (2007), citing Commonwealth v. D'Onofrio, 
    396 Mass. 711
    , 714-715 (1986).   "This question is analyzed under the
    familiar two-part query whether [the defendant] had a subjective
    expectation of privacy in the items seized, and if so, whether
    that expectation was reasonable objectively."   Bly, supra.
    The defendant asserts that he had a subjective expectation
    of privacy that society would deem reasonable because he
    surrendered his personal property with the expectation the
    property would be returned to him.   He asserts that the storage
    of his property in compliance with the center's policy created
    an involuntary bailment and the sergeant exceeded his authority
    by producing the items for viewing by detectives.   The
    Commonwealth counters that any expectation of privacy the
    defendant may have had was not reasonable, analogizing to
    Commonwealth v. Silva, 
    471 Mass. 610
    , 619-620 (2015), in which
    we considered whether a pretrial detainee who was on notice of
    8
    the facility's policy treating detainee and inmate clothing as
    contraband has a constitutionally protectable privacy interest
    in such clothing.   We held that there was not, because any
    expectation of privacy was not objectively reasonable under
    those circumstances.   
    Id.
       Our decision in Silva is not
    dispositive, however, because the center had no policy treating
    the defendant's property as contraband.    The center's policy
    specifically distinguishes between street clothes, shoes, and
    contraband.3
    Although the defendant's challenge to the search warrant
    rests on the claim that the police viewing of his property was
    an illegal search, we bypass the issue because the legality of
    the search is not determinative of the propriety of the judge's
    order denying the motion to suppress.     The denial of the
    defendant's motions to suppress was proper under the principle
    that, "[e]ven though the exclusionary rule generally bars from
    admission evidence 'obtained during an illegal search as fruit
    of the poisonous tree, evidence initially discovered as a
    3
    Under the section titled, "Property for Commitments,"
    which is applicable to the defendant's status as a person
    civilly committed pursuant to G. L. c. 123, § 35, the policy
    states, "When a commitment is admitted into the institution, his
    street clothes (except shoes and/or contraband) will be
    inventoried, laundered, boxed and stored in the Property Room."
    The defendant in Commonwealth v. Silva, 
    471 Mass. 610
    , 615 n.14
    (2015), signed an intake form stating that his personal property
    would be treated as contraband. Conversely, the intake records
    submitted in this case do not make any such reference.
    9
    consequence of an unlawful search may be admissible if later
    acquired independently by lawful means untainted by the initial
    illegality.'"   Commonwealth v. Estabrook, 
    472 Mass. 852
    , 865
    (2015), quoting Commonwealth v. DeJesus, 
    439 Mass. 616
    , 624
    (2003).   Accordingly, the evidence deriving from the defendant's
    shoes was admissible "as long as the affidavit in support of the
    application for a search warrant contains information sufficient
    to establish probable cause to [seize the defendant's shoes],
    apart from the observation of the [reddish brown stains]."
    Commonwealth v. Gray, 
    465 Mass. 330
    , 346, cert. denied, 
    134 S. Ct. 628
     (2013), quoting DeJesus, supra at 625.    To establish
    probable cause, "[a]n affidavit must contain sufficient
    information for an issuing magistrate to determine that the
    items sought are related to the criminal activity under
    investigation, and that the items reasonably may be expected to
    be located in the place to be searched at the time the search
    warrant issues."   Commonwealth v. Almonte, 
    465 Mass. 224
    , 233
    (2013), quoting Commonwealth v. Wilson, 
    427 Mass. 336
    , 342
    (1998).
    The affidavit in support of the warrant to search and seize
    the defendant's shoes included the following information.     The
    defendant previously had stolen prescription medication from the
    victim.   He admitted to being with her during the period when
    the murder was estimated to have occurred.   He told police that
    10
    he wanted to buy her prescription medication at that time, but
    he did not have the money.     The defendant was apprehended for
    civil commitment to treat substance abuse issues no more than
    thirty-six hours after the murder was estimated to have
    occurred.    The crime scene indicated that the assailant likely
    would have injuries and blood evidence on his or her clothing
    and shoes.    The defendant's clothing and shoes were stored at
    the center.    The affidavit also linked the defendant to the
    victim during the estimated time of her murder, established a
    conflict between the two, and created a reasonable inference
    that the defendant may have brought some or all of the items he
    was wearing at the time of the murder into the center.     Thus, we
    conclude that the affidavit supporting the August 31 warrant
    application contained sufficient facts, traceable to sources
    independent of the reddish brown stains observed on August 29,
    to establish probable cause.
    Because a valid search warrant would have issued regardless
    of the inclusion of the reddish brown stains observed on the
    defendant's shoes, there was an independent source for the
    challenged evidence.    See Gray, 465 Mass. at 347.   On this
    basis, we affirm the denial of the defendant's motion to
    11
    suppress the shoes.4    The defendant's challenges to the other two
    warrants are premised on the same argument.     Although the
    defendant claims that the September 8 warrants impermissibly
    relied on evidence derived from the shoes, he does not argue
    that they otherwise lack probable cause.     Because we conclude
    that the shoes were lawfully seized, and thus, evidence deriving
    from them was properly included in the two affidavits dated
    September 8, we do not address those warrants except to note our
    agreement with the denial of the defendant's three motions to
    suppress.
    2.   Trial.   a.   Background.   We recite the facts as the
    jury could have found them, reserving other facts for later
    discussion.   On Saturday, August 27, 2011, the body of the
    victim was found by her daughter and the daughter's boy friend.
    On Tuesday afternoon, August 23, the victim left a voicemail
    message for her daughter.    Because the daughter could not
    contact her after that voicemail, she went to the victim's
    apartment on Friday and Saturday to check on her.     On Saturday,
    4
    We reject the defendant's argument that the independent
    source doctrine is not appropriate in this case because there
    was no mistake or inadvertence on the part of police. The
    independent source doctrine balances the "interest of society in
    deterring unlawful police conduct and the public interest in
    having juries receive all probative evidence of a crime . . . by
    putting the police in the same, not a worse, position [than]
    they would have been in if no police error or misconduct had
    occurred." Estabrook, 472 Mass. at 868 n.26, quoting
    Commonwealth v. Frodyma, 
    393 Mass. 438
    , 443 (1984).
    12
    the daughter's boy friend entered the apartment through a window
    in the rear of the house leading to the victim's bedroom.
    Once inside, he saw the apartment in disarray and with
    blood in several areas.   The victim's feet were sticking out
    from under a blanket on the couch.   He and the daughter
    telephoned 911.   They started cleaning up pipes used to smoke
    "crack" cocaine and needles that were in the apartment, but then
    realized it was a crime scene and placed those items on the
    counter.
    Boston police arrived to process the scene and canvass the
    neighborhood for information.   A criminalist observed that the
    assault had occurred in the main living area and that the body
    was later moved to the couch and covered with a blanket.    The
    victim had severe trauma to the head, and the police did not
    find anything in the apartment that was consistent with being
    the murder weapon.   Police found an empty pill bottle that was
    labeled as Clonazepan, filled on August 11, 2013, and has a
    brand name of Klonopin.   A v-neck T-shirt and gray cut-off
    shorts, both wet, were collected from the bathroom.
    The medical examiner who performed the autopsy determined
    the cause of death to be blunt impact injuries to the victim's
    head.   He concluded that a cylindrical, round object such as a
    baseball bat or pipe caused the injuries.   The autopsy revealed
    decomposition, which begins approximately thirty-six hours after
    13
    death, and mummification, which begins four to five days after
    death.   From that information, he estimated that death occurred
    more than thirty six hours before the body was found, by at
    least "several days."   The prosecutor argued that the defendant
    murdered the victim between late afternoon Tuesday and Wednesday
    morning.
    The victim sold prescription Klonopin pills, sometimes
    using the money to purchase "crack" cocaine.    The defendant
    lived across the street from the victim and had previously
    purchased drugs from her.    His mother testified that he had
    relapsed into taking drugs approximately one week before the
    victim's body was found.    Although she said that he agreed to go
    to a treatment facility for a "few" days, he would not agree to
    a longer period.   She threatened to have him civilly committed
    for treatment several times.    The defendant was accused of
    stealing prescription pills from a different woman who lived in
    the same building as the victim.    Following the neighbor's
    accusation, the defendant's mother kicked him out of the house
    and, on Tuesday afternoon, went to court to have him committed.
    The defendant was apprehended for commitment early on
    Wednesday morning.   Between the time that his mother kicked him
    out of the house and when he was apprehended, he stayed at the
    nearby house of his friend, Thomas Kinsella.   Kinsella's house
    14
    and the victim's apartment are connected by a staircase in the
    rear of both buildings.
    Kinsella and his sister, who was at Kinsella's house on
    Tuesday with her young daughter, testified that defendant was
    gone for approximately a three-hour period sometime after 2 or
    3 P.M.    Kinsella's sister testified that the defendant left the
    house wearing a white T-shirt and black mesh shorts and returned
    sweaty and wearing a black Boston team shirt and cargo shorts.
    Kinsella and his sister both testified that defendant said he
    had been helping a neighbor with yard work.    The neighbor
    testified that the defendant did not help him in the yard that
    day.
    After he returned, the defendant filled two plastic grocery
    bags and placed them outside the door to Kinsella's apartment.
    A neighbor testified that he saw the defendant's brother placing
    a plastic store bag in a trash receptacle in front of a
    convenience store, but he could not recall when that occurred.
    The defendant's brother testified that he only used the trash
    can for his family's home, not the one at the convenience store.
    Kinsella and his sister went to bed at approximately
    7:30 P.M.    The defendant was at Kinsella's house when they went
    to bed.     Kinsella's sister woke up at approximately 6:30 A.M. on
    Wednesday, and the defendant was in the living room with items
    from a doughnut shop for her and her daughter.
    15
    In addition to the seizure of the defendant's shoes
    discussed supra, police seized a baseball bat from Kinsella's
    home, which had one fingerprint on the grip and reddish brown
    stains.   Blood found on the grip, barrel, and butt of the bat
    was consistent with the victim's DNA profile.5   Handler DNA taken
    from the grip of the bat contained a mixture that was consistent
    with three DNA profiles:   the victim, the defendant, and
    Kinsella.6   When testing for handler DNA, the analyst swipes an
    entire area to determine if any nonvisible DNA may be collected
    from locations where an item is typically handled.    The tongue
    of the defendant's right shoe and the sole of the left shoe
    contained a mixture of DNA that was consistent with DNA profiles
    for the victim and the defendant.7   Kinsella was excluded as a
    possible contributor to the DNA found on the shoes.
    5
    An analyst testified that the statistical probability of a
    match in the general population to the blood found on the bat
    consistent with the victim's deoxyribonucleic acid (DNA) profile
    was in the trillions to septillions.
    6
    The analyst testified that the statistical probability of
    a match in the general population to the handler DNA found on
    the grip of the bat consistent with the defendant's DNA was in
    the millions and billions. No statistics were provided for the
    handler DNA consistent with the victim or Kinsella.
    7
    The analyst testified that the statistical probability of
    a match in the general population to the defendant's DNA found
    on the sole of the left shoe was one in four Caucasians, one in
    twenty African Americans, and one in five Southeastern
    Hispanics. The analyst did not provide statistical
    probabilities for a match in the general population to the
    16
    The defendant, who did not testify or present witnesses,
    argued through cross-examination and closing that lack of motive
    and faulty police investigation created reasonable doubt.   He
    named Kinsella as the killer and argued that the defendant's DNA
    was on the baseball bat because he took the bat from Kinsella's
    niece the morning before he was committed and that Kinsella wore
    his shoes to commit the murder.
    b.   DNA evidence.   Relying on Commonwealth v. Mattei, 
    455 Mass. 840
    , 855 (2010), in which we held that nonexclusion DNA
    results must be presented with statistics explaining the
    significance of that evidence, the defendant challenges the
    admission of evidence that the victim's blood was on his shoes
    because the DNA test results were not provided with statistics.
    Where the defendant did not object at trial and claims that
    counsel was ineffective for failing to preserve the issue, we
    review under G. L. c. 278, § 33E, "to determine whether any
    defendant's DNA found on the tongue of the right shoe or the
    victim's DNA found on either shoe. The parties agreed to enter
    the DNA report by the Boston police crime laboratory in the
    appellate record. The conclusions contained in the report
    demonstrate that the statistical probability for a match in the
    general population to the victim's DNA on the sole of the left
    shoe is in the trillions and quintillions, and that the
    statistical probability for a match in the general population to
    the victim's DNA on the tongue of the right shoe is in the
    millions and billions. The report also demonstrates that the
    statistical probability for a match in the general population to
    the defendant's DNA on the tongue of the right shoe is one in
    8.1 million Caucasians, one in 1.5 billion African-Americans,
    and one in 130,000 Southeastern Hispanics.
    17
    substantial conduct or omission by counsel 'was likely to have
    influenced the jury's conclusion.'"    Commonwealth v. Montez, 
    450 Mass. 736
    , 754 (2008), quoting Commonwealth v. Wright, 
    411 Mass. 678
    , 682 (1992), S.C., 
    469 Mass. 447
     (2014).
    The defendant's argument is unavailing.    The DNA report by
    the Boston police crime laboratory was provided to the defendant
    before trial.    The report stated that the statistical likelihood
    of a match in the general population to the victim's DNA profile
    taken from the defendant's shoes was in the millions to
    quintillions.    Where the statistics in this case, if admitted,
    would have demonstrated that the likelihood of another person
    besides the victim leaving the DNA on the defendant's shoes was
    less than one in one million, the evidence would have been
    damaging to the defendant.    Underlying our holding in Mattei was
    the concern that nonexclusion DNA results without statistics
    could mislead jurors into thinking that the results are
    conclusive when the DNA could have been left by "half the people
    in the world."    Mattei, 
    455 Mass. at 852
    , quoting Commonwealth
    v. Mattei, 
    72 Mass. App. Ct. 510
    , 522 (2008) (Rubin, J.,
    dissenting).    Such a concern is not applicable to the facts of
    this case, where the statistics would have demonstrated the high
    probability that the DNA on the defendant's shoes belonged to
    the victim.
    18
    c.      Jury instruction on mental impairment.   The defendant
    argues that the judge committed reversible error by failing to
    instruct the jury that they could consider evidence of the
    defendant's consumption of drugs as it related to his ability to
    act with extreme atrocity or cruelty or with deliberate
    premeditation.    If requested, a defendant is entitled to such an
    instruction.    See Commonwealth v. Doucette, 
    391 Mass. 443
    , 455
    (1984), citing Commonwealth v. King, 
    374 Mass. 501
    , 508 (1978)
    (premeditation), and Commonwealth v. Perry, 
    385 Mass. 639
    , 648-
    649 (1982), S.C., 
    424 Mass. 1019
     (1997) (extreme atrocity or
    cruelty).    Additionally, a judge must instruct the jury that
    they could consider evidence of a defendant's mental impairment
    on the question of extreme atrocity or cruelty where evidence of
    such "mental impairment is significant and where it is a
    critical aspect of [his] defense."     Commonwealth v. Rutkowski,
    
    459 Mass. 794
    , 799 (2011).
    In this case, the defendant did not request such an
    instruction or specifically object to its omission.     The
    defendant requested a manslaughter instruction, and the
    Commonwealth objected, arguing that there was no specific
    evidence of drug or alcohol use that had any effect on the
    defendant's state of mind.    The defendant asserted that the
    relevant evidence was the Commonwealth's theory that the
    defendant "was in such a state of withdrawal that he was willing
    19
    and able and actually did . . . kill someone to get her
    prescription bottle of Klonopin."8   The judge denied the
    defendant's request, and the defendant objected.    The defendant
    concedes that this discussion was not sufficient to preserve the
    issue, and we review to determine if any error created a
    substantial likelihood of a miscarriage of justice.
    Commonwealth v. Smith, 
    449 Mass. 12
    , 19 (2007), citing
    Commonwealth v. Berry, 
    420 Mass. 95
    , 113 (1995).
    The omission of a mental impairment instruction in this
    case did not create a substantial likelihood of a miscarriage of
    justice.   First, mental impairment was not central to his
    defense where the defendant argued that someone else was the
    perpetrator.   See Commonwealth v. Sanna, 
    424 Mass. 92
    , 102
    (1997).    Also, there was nothing close to "significant" evidence
    of the defendant's mental impairment.   Contrast Rutkowski, 459
    Mass. at 798-799.
    Several witnesses testified about the defendant's behavior
    around the estimated time of the murder.    The defendant's mother
    and sister both testified that the defendant was "upset" on
    8
    Trial counsel argued that the "strongest" evidence of the
    defendant's mental impairment was the judicial determination on
    August 24, 2011, which occurred according to the Commonwealth's
    theory between one and twenty-four hours after the murder, that
    he was in a "state that was associated with drug intoxication
    and/or withdrawal." The Commonwealth correctly asserted,
    however, that the judicial finding that led to the commitment is
    not in evidence.
    20
    Monday and Tuesday afternoons because he had been kicked out of
    the house.   Kinsella testified that the defendant was upset on
    Tuesday afternoon before the two- to three-hour period when he
    was unaccounted for and that he returned "more relaxed."
    Kinsella noted that the defendant had one and one-half Suboxone
    pills (a medication to treat opiate dependency) when he
    returned, but Kinsella had no knowledge about whether the
    defendant took the pills.   The police officers who apprehended
    the defendant for commitment on Wednesday morning testified that
    the defendant appeared "nervous" but cooperated after being told
    that he was being committed, and he asked questions relevant to
    the apprehension.   Significantly, no witness noted that the
    defendant appeared impaired or testified to any observations of
    the defendant's consumption of drugs or alcohol.
    Because any diminished capacity instruction would have been
    of minimal significance considering the lack of evidence
    demonstrating any mental impairment, we conclude that the
    failure to give such an instruction did not create a substantial
    likelihood of a miscarriage of justice.9   See Commonwealth v.
    Rosado, 
    434 Mass. 197
    , 207, cert. denied, 
    534 U.S. 963
     (2001).
    9
    Moreover, it appears that the jury did consider the
    defendant's mental state in their deliberations. The foreperson
    submitted the following question to the judge: "When [the
    defendant] was admitted to the [center] what did his toxicology
    report read?" The judge responded that the jury must reach a
    21
    d.   Juror bias.    During the afternoon break on the third
    day of trial testimony, an individual who had been watching the
    trial approached defense counsel and told him that he overheard
    two jurors discussing the trial during the morning break.      The
    judge conducted a voir dire, and the individual explained that
    he was at the court for a civil case scheduled for 2 P.M. and
    decided to sit in on this trial while he waited.     He said he was
    outside smoking during the morning break when he heard a female
    juror telling a male juror that "the witness was not credible"
    and the male respond, "nobody's paying attention to the case,
    and he probably guilty already."10    After he heard the two
    talking, the individual started eavesdropping by pretending that
    he was looking at a statue.     The individual told the judge that
    he had been falsely accused of murder in the early 1990s, and
    the conversation bothered him because he knew from his murder
    trial that jurors were not supposed to talk to each other about
    the case.     The individual provided conflicting testimony about
    the timing of his realization that the conversation was between
    two jurors.
    verdict based on the evidence before them and may not engage in
    speculation.
    10
    Later in his voir dire testimony, the individual
    attributed the statement, "he's probably guilty already," to the
    female juror.
    22
    The judge conducted a voir dire of the two jurors in
    question.    The female juror, in seat three, testified that she
    did not remember speaking to anyone and did not remember making
    any statements about a witness's credibility or the guilt of the
    defendant.     The juror said that she did not "really know all the
    jurors so [she did not] speak to any of them" and did not know
    "who the black male is with beige pants."     Lastly, she told the
    judge that she could say with confidence that she did not make
    the statements attributed to her.
    The judge then conducted a voir dire of the male juror in
    seat nine.     The juror testified that he did speak with the
    female juror, and referred to her correctly by her first name,
    but said that they were discussing a case in Florida that was in
    the news at the time and did not discuss this case.     The juror
    stated that the only reference he may have made to this case was
    to say that he was keeping a clear mind.
    The judge discussed an option of making the female juror an
    undisclosed alternate, but instead determined that the juror was
    indifferent.     He found the two jurors to be credible and the
    individual to lack credibility, and he rejected defense
    counsel's argument that the testimony by the two jurors was
    contradictory.     Neither juror was chosen as an alternate.
    The defendant argues that the judge abused his discretion
    in finding the female juror to be impartial.     Because "[t]he
    23
    determination of a juror's impartiality 'is essentially one of
    credibility, and therefore largely one of demeanor,' . . . we
    give a trial judge's determination of impartiality great
    deference" (citations omitted).     Commonwealth v. McCowen, 
    458 Mass. 461
    , 493 (2010).   Accordingly, we review questions of
    juror bias for "clear abuse of discretion or a showing that the
    judge's findings were clearly erroneous."     Commonwealth v.
    Torres, 
    437 Mass. 460
    , 469 (2002), quoting Commonwealth v.
    Amirault, 
    399 Mass. 617
    , 626 (1987), S.C., 
    404 Mass. 221
     (1989).
    Specifically, the defendant argues that the female juror
    was intentionally dishonest and should have been excused.       We
    conclude that the judge did not abuse his discretion, as the
    testimony of the two jurors was not necessarily contradictory.
    Although the male juror testified that the two spoke, it is
    possible that the female juror did not recall the conversation
    because it was not concerning this case.    Moreover, we cannot
    say that the juror's statement that she did not know "who the
    black male is with beige pants" was dishonest as even the court
    officers first obtained the wrong juror based on that
    description, and the individual had to correct them so that the
    proper male juror was identified.    Our review demonstrates that
    the judge reasonably could have found the juror credible and,
    therefore, did not abuse his discretion.
    24
    3.    Relief pursuant to G. L. c. 278, § 33E.   We have
    examined the record pursuant to our duty under G. L. c. 278,
    § 33E, and we discern no basis on which to grant the defendant
    relief.
    So ordered.