Commonwealth v. Amaral ( 2019 )


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    SJC-12244
    COMMONWEALTH   vs.   JEREMY AMARAL.
    Bristol.    April 5, 2019. - June 26, 2019.
    Present:    Gants, C.J., Lenk, Lowy, Budd, & Cypher, JJ.
    Homicide. Constitutional Law, Admissions and confessions,
    Voluntariness of statement. Evidence, Admissions and
    confessions, Voluntariness of statement, Hearsay, Verbal
    completeness, Expert opinion, Photograph. Practice,
    Criminal, Admissions and confessions, Voluntariness of
    statement, Instructions to jury, New trial, Capital case,
    Jury and jurors, Examination of jurors, Voir dire, Argument
    by counsel, Assistance of counsel. Jury and Jurors.
    Indictments found and returned in the Superior Court
    Department on May 2 and June 27, 2013.
    A pretrial motion to suppress evidence was heard by Renee
    P. Dupuis, J; the cases were tried before Gary A. Nickerson, J.,
    and a motion for a new trial, filed on December 29, 2017, was
    considered by him.
    Susan J. Baronoff for the defendant.
    Erica G. Sylvia, Assistant District Attorney, for the
    Commonwealth.
    BUDD, J.    Following a jury trial, the defendant, Jeremy
    Amaral, was convicted of murder in the first degree on the
    2
    theories of deliberate premeditation, extreme atrocity or
    cruelty, and felony-murder (with armed robbery as the predicate
    offense) in connection with the death of Tiffany Durfee.1    In
    this consolidated appeal from his convictions and from the
    denial of his motion for a new trial, the defendant challenges
    the denial of his motion to suppress his statements to police,
    instructions given to the jury, and the improper exclusion of
    certain hearsay evidence.     The defendant further argues that the
    judge improperly denied him an evidentiary hearing on his motion
    for a new trial.   Alternatively, the defendant requests that we
    exercise our authority under G. L. c. 278, § 33E.
    We affirm the defendant's convictions and the order denying
    his motion for a new trial.    Further, after a review of the
    entire record, we decline to reduce the verdict of murder in the
    first degree to a lesser degree of guilt or to set aside the
    defendant's convictions under G. L. c. 278, § 33E.
    Factual background.    We summarize the facts as the jury
    could have found them, reserving certain details for discussion
    of specific issues.
    On the afternoon of March 13, 2013, the victim was found
    dead in her living room with her throat cut.    Her two young
    1 The defendant also was convicted of misleading a police
    officer.
    3
    children were found unharmed in their bedroom.   A flat screen
    television was missing from her home.
    Based on telephone records, investigators learned that
    several calls were made between the victim's and the defendant's
    cellular telephones (cell phones) beginning at approximately 11
    P.M. on March 12 and continuing into the early morning of March
    13.   On March 14, after learning that police were looking for
    him, the defendant appeared at the police station.   With him was
    Michael Garcia, a close childhood friend.   The two were
    interviewed separately and gave similar accounts of being at the
    victim's home in the early morning hours of March 13.      Both told
    police that they took one of the victim's televisions (with her
    consent) to exchange it for cash and "crack" cocaine.      The two
    claimed that after smoking the cocaine with the victim, they
    then invited another individual, whom we shall call David, to
    the apartment to purchase the victim's second television.     The
    defendant and Garcia told police that they left David alone with
    the victim and implicated David in the victim's death.
    After confirming that David had an alibi, investigators
    spoke again to the defendant, and learned that the defendant
    sold the victim's television to an individual named Jason
    McCarthy.   McCarthy testified that when the defendant arrived at
    his home with the television, the defendant's sweatshirt was
    stained red.   When McCarthy asked the defendant what happened,
    4
    he replied, "I just murdered somebody . . . .    No.   I was
    painting."    When police confiscated the television, it was
    smeared with red-brown stains that tested positive for the
    presence of blood.
    The defendant and Garcia subsequently were arrested and
    charged with misleading the police.    When Garcia learned that
    the television was stained with blood, he admitted to police
    that he had lied about having been with the defendant in the
    victim's apartment.    Rather, Garcia said that the defendant had
    telephoned Garcia from the victim's home at approximately 2 or 3
    A.M. to ask for a ride so that the defendant could bring the
    television to McCarthy.
    As part of the investigation, the defendant and Garcia's
    hands were swabbed; the defendant's hands tested positive for
    the presence of blood.    Investigators recovered a bloody T-shirt
    found in a trash can in McCarthy's yard, and a bloody sweatshirt
    and bloodstained shoes from a second location based on a lead
    from Garcia.   Deoxyribonucleic acid (DNA) testing of the blood
    stains on the clothing and shoes did not exclude the victim as
    the source.    Tests on samples containing DNA from more than one
    person also did not exclude the defendant and the victim,
    although they did exclude Garcia, David, and McCarthy, among
    others.   Further, the soles of the shoes were consistent with
    footprint impressions found in blood in the victim's apartment.
    5
    The defendant, who testified at trial, claimed that
    although he was present, it was Garcia who killed the victim
    during an argument over cocaine.    The defendant further
    testified that the story he told police in his first interview
    was made up to protect Garcia.
    Discussion.    1.   Statements made to investigators.   The
    defendant claims that the motion judge erred by declining to
    suppress the videotaped statements he made to investigators
    because he was not provided with a recitation of the Miranda
    warnings prior to questioning and because his statements were
    made involuntarily.     "'When reviewing the denial of a motion to
    suppress, we accept the [motion] judge's findings of fact . . .
    absent clear error,' but we independently determine 'the
    correctness of the judge's application of constitutional
    principles to the facts as found.'"     Commonwealth v. Molina, 
    467 Mass. 65
    , 72 (2014), quoting Commonwealth v. Tremblay, 
    460 Mass. 199
    , 205 (2011).   In light of the deference owed the judge's
    findings, and on our own review of the record, we affirm the
    order denying the defendant's motion to suppress.
    We summarize the detailed findings of fact made by the
    motion judge.   The defendant and Garcia voluntarily appeared at
    the police station with Garcia at approximately 4 P.M. on
    March 14, 2013, to be interviewed.    The two were escorted to
    separate interview rooms, but they could converse freely prior
    6
    to the start of the interviews.   The defendant also placed
    telephone calls before the interview began, and he telephoned
    his mother during a break in the questioning to make dinner
    plans.   The defendant told investigators at the start of the
    interview that he had to "get straight" prior to speaking with
    police, which was interpreted to mean that he had ingested drugs
    before arriving at the station.   However, he did not smell of
    alcohol, slur his speech, or otherwise appear to be under the
    influence of an intoxicating substance.     He was "coherent, lucid
    and talkative."   He "clearly manifested an understanding of the
    conversation" and answered questions appropriately.       At some
    points he expressed wariness of supplying some information for
    fear of being labeled a "rat"; at others, he attempted to
    leverage his willingness to cooperate for "consideration" in
    connection with a pending probation matter.
    The tone of the interview was "cordial, polite,
    nonaggressive, and heavily influenced and controlled by the
    defendant."   The defendant, a college graduate, had had previous
    experience with police prior to the interview and had waived his
    Miranda rights before speaking to police.     Early on,
    investigators informed the defendant that he was not a suspect
    in the murder, but that they were attempting to piece together a
    timeline of the victim's death.   The defendant was cooperative
    with the investigators:   he voluntarily gave them his cell phone
    7
    and signed a consent form to allow them to search it.    He also
    allowed police to photograph the absence of injuries on his
    hands and to swab him for blood residue.
    The defendant never was told that he was in custody or that
    he could not leave the station.   Although one of the officers
    conducted a quick pat-down of the defendant at one point, that
    officer did so only when the officers observed the defendant
    scratching himself, which the defendant explained as a
    manifestation of his heroin addiction.     During two breaks, the
    defendant was escorted to the bathroom and outside to have a
    cigarette.
    After one break, the investigators told the defendant that
    Garcia had given them more information than the defendant had
    provided and suggested that he was not telling them the complete
    truth.   It was then that the defendant indicated that David was
    the last person to see the victim alive.    The defendant further
    offered to "set up a drug deal" so that investigators could
    investigate David.   The investigators agreed and the defendant
    left the station to complete the controlled drug purchase with
    David.
    After the controlled drug purchase, the defendant
    accompanied police back to the station and again was seated in
    the meeting room, but he was not told that he could not leave
    the station.   Shortly after 9 P.M., police held a second
    8
    interview with the defendant, in which he told them that the
    first television had been sold to Jason McCarthy.    The second
    interview lasted for a few minutes.     Police confirmed David's
    alibi for the night of the murder.    They also learned from
    McCarthy that the first television had blood on it and that
    McCarthy had seen the defendant with blood on him when he
    delivered it.   After police received this information, a third
    interview with the defendant was conducted.    At the start of
    that interview, the defendant invoked his right to counsel, and
    he was arrested.
    a.     Miranda warnings.   Miranda warnings are required only
    when a suspect is subject to custodial interrogation.
    Commonwealth v. Jung, 
    420 Mass. 675
    , 688 (1995).    The defendant
    bears the burden of proving that he was in custody for the
    purposes being entitled to a recitation of Miranda warnings
    prior to questioning.    Commonwealth v. Girouard, 
    436 Mass. 657
    ,
    665 (2002).
    An interview is custodial where "a reasonable person in the
    suspect's shoes would experience the environment in which the
    interrogation took place as coercive" (citation omitted).
    Commonwealth v. Cawthron, 
    479 Mass. 612
    , 617 (2018).    Four
    factors are considered in determining whether a person is in
    custody:
    9
    "(1) the place of the interrogation; (2) whether the
    officers have conveyed to the person being questioned any
    belief or opinion that the person is a suspect; (3) the
    nature of the interrogation, including whether the
    interview was aggressive or, instead, informal and
    influenced in its contours by the person being interviewed;
    and (4) whether, at the time the incriminating statement
    was made, the person was free to end the interview by
    leaving the locus of the interrogation or by asking the
    interrogator to leave, as evidenced by whether the
    interview terminated with an arrest."
    Commonwealth v. Groome, 
    435 Mass. 201
    , 211-212 (2001).      We
    address these factors in turn.
    i.    The location of the interview.   The defendant was
    interviewed at the police station, a location that may be
    considered coercive; however, he arrived of his own volition.
    See Commonwealth v. Sparks, 
    433 Mass. 654
    , 657 (2001) (interview
    that took place at police station was not custodial where
    defendant arrived and left voluntarily).   The defendant argues
    that the fact that police were attempting to locate him prior to
    his appearing at the station for an interview put pressure on
    him to appear.   Assuming this is true, it does not alter the
    objective circumstances of the interview discussed infra.        See
    Groome, supra at 212.   See also Commonwealth v. Brum, 
    438 Mass. 103
    , 112 (2002).
    ii.   Whether the police conveyed a belief that the
    defendant was a suspect.   Investigators indicated to the
    defendant that he was a witness, rather than a suspect, until
    the third interview, at which point the defendant invoked his
    10
    right to counsel and questioning stopped.    Even after speaking
    with Garcia and confronting the defendant about his not being
    completely forthcoming, investigators did not tell the defendant
    that there was any incriminating evidence against him, or that
    he was under suspicion.   The officers only communicated that
    they wanted to know more about the events leading up to the
    victim's death.   See Commonwealth v. Morse, 
    427 Mass. 117
    , 123-
    124 (1998) (investigator's suspicions concerning interviewee
    immaterial unless they influence objective conditions of
    interrogation).
    iii.   The nature of the interview.   The interview was
    conducted in a calm and cordial manner, and the defendant
    heavily influenced its direction.   The defendant apparently felt
    comfortable enough with the investigators to ask them to put in
    a good word with his probation officer, and later to suggest
    that police conduct a controlled drug purchase in which he would
    participate in order for the officers to investigate David.     We
    conclude, as the motion judge did, that the environment was not
    one in which a reasonable person in the defendant's position
    would not feel free to leave.2
    2 The defendant's argument that the motion judge
    impermissibly relied on the defendant's subjective intent and
    motivation misses the mark. A motion judge is not forbidden
    from taking subjective facts into account, especially to the
    extent that those facts influenced the objective conditions of
    an interrogation. See, e.g., Commonwealth v. Groome, 
    435 Mass. 11
    iv.   Freedom to leave.   Until the point at which he was
    arrested, the defendant never was told he was in custody, and in
    fact he made dinner plans during a telephone conversation with
    his mother.   Further, he left the station without a police
    escort to participate in a controlled drug purchase.
    Considering the above factors in total, we agree with the
    motion judge that the defendant was not in custody during the
    questioning, and thus providing the defendant with Miranda
    warnings before he was interviewed was not mandated.
    b.    Voluntariness.   The right to due process under the
    Fifth and Fourteenth Amendments to the United States
    Constitution requires that admissions be voluntarily made,
    without coercion, to be admissible.    Commonwealth v. Magee, 
    423 Mass. 381
    , 387-388 (1996).    Commonwealth v. Brady, 
    380 Mass. 44
    ,
    48, 52 (1980).   The Commonwealth has the burden to prove beyond
    a reasonable doubt that, "'in light of the totality of the
    circumstances surrounding the making of the statement, the will
    of the defendant was [not] overborne,' but rather that the
    statement was 'the result of a free and voluntary act.'"
    Commonwealth v. Baye, 
    462 Mass. 246
    , 256 (2012), quoting
    Commonwealth v. Durand, 
    457 Mass. 574
    , 595-596 (2010), S.C., 
    475 Mass. 657
    (2016), cert. denied, 
    138 S. Ct. 259
    (2017).
    201, 212-213 (2001); Commonwealth v. Morse, 
    427 Mass. 117
    , 124
    (1998).
    12
    In considering whether a statement was made voluntarily,
    relevant factors include "conduct of the defendant, the
    defendant's age, education, intelligence, and emotional
    stability, experience with and in the criminal justice system,
    [and] physical and mental condition" (citation omitted).
    Commonwealth v. Tremblay, 
    480 Mass. 645
    , 661 (2018).   Here the
    defendant is a college graduate and previously had been exposed
    to police questioning in a different context.   Although the
    defendant apparently had ingested heroin prior to the interview,
    he was alert and oriented, and he did not appear to be under the
    influence of any intoxicating substances.   See Commonwealth v.
    Silanskas, 
    433 Mass. 678
    , 685 (2001) (consumption of
    intoxicating substances without more does not render statement
    involuntary); Commonwealth v. Ward, 
    426 Mass. 290
    , 294 (1997)
    (same).   The defendant answered questions appropriately, and his
    responses indicated that he was rational and in control of his
    faculties.
    The defendant demonstrated his understanding by providing
    information to exculpate himself and inculpate another.    See
    Commonwealth v. McCowen, 
    458 Mass. 461
    , 472 (2010) (in finding
    voluntariness of statements, judge was entitled to consider fact
    that defendant attempted "to talk his way out of his
    predicament"), and cases cited.   He also suggested, and then
    participated in, a controlled drug purchase.    Based upon the
    13
    record before us, we agree with the motion judge that the
    defendant's statements were voluntarily made.
    Because the defendant's statements to the investigators
    were not made in violation of any of his constitutional rights,
    we do not find that the motion judge erred in declining to
    suppress them.
    2.   Exclusion of hearsay evidence.    At trial, the
    defendant's mother testified that, on the night of the killing,
    the defendant telephoned her to ask if she would buy a
    television.   On cross-examination, defense counsel elicited
    further testimony about this conversation.   The defendant's
    mother stated, "He wanted to know if I wanted to buy [the
    television], and I said 'Jeremy, I told you not to call me about
    anything, especially if it's stolen.'"    She continued, "[I]n the
    background somebody's -- ," at which point the Commonwealth
    objected on hearsay grounds.
    The judge sustained the objection.     At sidebar, defense
    counsel proffered that the defendant's mother would testify that
    she heard a female voice in the background saying, "No, it's not
    stolen; it's my TV," and argued that this statement was
    admissible under the doctrine of verbal completeness.      The judge
    ruled that the doctrine of verbal completeness was not
    applicable and did not permit the witness to testify as to the
    substance of any statements by the voice in the background.
    14
    On appeal, the defendant reiterates that the hearsay
    statement from an unidentified third party should have been
    admitted, and that its exclusion constituted prejudicial error.
    We disagree.
    Under the doctrine of verbal completeness, when a party
    introduces a portion of a statement, "a judge has discretion to
    allow admission of other relevant portions of the same statement
    or writing which serve to clarify the context of the admitted
    portion" (quotations, citation, and alteration omitted).
    Commonwealth v. Crayton, 
    470 Mass. 228
    , 246 (2014).    The
    doctrine allows an adverse party to offer an additional
    statement to contextualize the one already admitted.
    Commonwealth v. Aviles, 
    461 Mass. 60
    , 75-76 (2011).    For a
    hearsay statement to be admitted under the doctrine, an adverse
    party must show that the additional statements are "(1) on the
    same subject as the admitted statement; (2) part of the same
    conversation as the admitted statement; and (3) necessary to the
    understanding of the admitted statement."   Crayton, supra at
    247, quoting 
    Aviles, supra
    at 75.   See Commonwealth v. Clark,
    
    432 Mass. 1
    , 15 n.8 (2000) (portions of statement sought to be
    introduced must "qualify or explain" segments previously
    introduced).   Relevance alone is insufficient to support
    admission.   See Commonwealth v. Eugene, 
    438 Mass. 343
    , 351
    (2003); Mass. G. Evid. § 106 (2018).   The doctrine aims to
    15
    prevent one party from presenting "a fragmented or misleading
    version of events" to the fact finder.    Crayton, supra at 246,
    quoting 
    Aviles, supra
    .
    The proffered statement must meet each component of the
    doctrine of verbal completeness to be admissible.      
    Crayton, 470 Mass. at 247
    .   Concerning the first inquiry here, because all of
    the statements involved the television, the first requirement
    was met.
    Concerning the second inquiry, here, it was unclear whether
    the proffered statement was part of the same conversation as
    that between the defendant and his mother.    The defendant did
    not make an offer of proof as to any other details about the
    telephone call -- such as the identity of the third party -- and
    there was no indication that either the defendant or his mother
    ever addressed the third party.    See Mass. G. Evid. § 103(a)(2)
    (2018).
    Finally, concerning the inquiry whether the proffered
    statement was necessary to the full understanding of the
    admitted statements, 
    Crayton, 470 Mass. at 247
    , relevance by
    itself does not provide a sufficient basis for admissibility
    under the doctrine of verbal completeness.    
    Eugene, 438 Mass. at 351
    .   Instead, the statement must "serve to clarify the context
    of the admitted portion."    
    Clark, 432 Mass. at 14
    .   See Crayton,
    supra at 247 n.3; Commonwealth v. Watson, 
    377 Mass. 814
    , 833
    16
    (1979), S.C., 
    409 Mass. 110
    (1991).    Here, the defendant argues
    that the third-party statement, "No, it's not stolen; it's my
    TV," was necessary to explain and qualify the defendant's offer
    to sell the television because it tends to show the owner's
    consent to the sale.   The defendant also argues that without
    admitting the statement in question, the jury might have
    inferred that his silence was an implied, adoptive admission
    that the television was, in fact, stolen.    See Crayton, supra at
    247.
    In 
    Crayton, 470 Mass. at 246-247
    , we held that given the
    admission of the defendant's acknowledgement that he used a
    certain computer, it was an abuse of discretion under the
    doctrine of verbal completeness to exclude the defendant's
    denial that he used the computer to view child pornography.
    In that case, the denial was necessary to understand the
    admitted statements because, without it, a reasonable jury
    "might have understood the other statements the defendant made
    to the detectives as an implied admission to having viewed the
    child pornography."    
    Id. at 247.
    However, here, the denial of wrongdoing was made by an
    unidentified third party.   See 
    id. at 247-248
    (further
    statements admitted from same person to contextualize that
    person's previously admitted testimony).    See also 
    Aviles, supra
    at 75 (same).   Although the doctrine of verbal completeness does
    17
    not require that a proffered statement be from the same speaker
    as the admitted statement, a trial judge nonetheless reasonably
    could find that the unprompted comment by the third party did
    not shed light on any statement attributed to either the
    defendant or his mother.
    Moreover, without any evidence as to the identity of the
    third party declarant, the proffered statement is especially
    vulnerable to the foundational problems associated with hearsay
    -- that is, questionable reliability and the speaker's
    unavailability for cross-examination.   See Commonwealth v. Del
    Valle, 
    351 Mass. 489
    , 491 (1966), S.C., 
    353 Mass. 684
    (1968)
    (theory underlying exclusion of hearsay is that "the trier of
    fact is forced to rely upon the declarant's memory,
    truthfulness, perception, and use of language not subject to
    cross examination"); 2 McCormick on Evidence § 245 (K.S. Broun
    ed., 7th ed. 2013) (hearsay disfavored because value of
    testimony depends on "perception, memory, narration, and
    sincerity" of witness, which are difficult to evaluate with
    unavailable declarant).
    Thus, because the defendant was unable to demonstrate
    either that the proffered statement was part of the same
    conversation as the admitted statement or that it was necessary
    to the understanding of the admitted statement, the judge did
    not abuse his discretion by excluding it.   See Commonwealth v.
    18
    Morin, 
    478 Mass. 415
    , 432 (2017) (judge did not abuse discretion
    "in finding that there was an inadequate foundation to permit
    the introduction of this [hearsay] evidence").
    3.   Jury instructions.   The defendant contends that the
    judge erred by declining to give a humane practice instruction
    sua sponte, and by declining to provide the jury with complete
    instructions on joint venture.
    a.   Humane practice instruction.    Where the voluntariness
    of a defendant's admission is in question, under the humane
    practice rule, the judge will instruct the jury that the
    prosecution must prove that the defendant's statements were
    voluntary beyond a reasonable doubt.    See Commonwealth v.
    Gallett, 
    481 Mass. 662
    , 686 (2019), quoting Commonwealth v.
    Sunahara, 
    455 Mass. 832
    , 835 (2010).
    Here, prior to trial, the defendant moved to suppress the
    statements he made to police partially based on grounds of
    voluntariness:   he claimed to have been under the influence of
    narcotics at the time of the interrogation.   Although, in
    denying the defendant's motion to suppress, the motion judge
    found that the defendant's statements were voluntary, the
    defendant argues that the jury could have found otherwise, and
    now asks us to conclude that the trial judge's failure to give
    19
    the instruction sua sponte resulted in reversible error.3   This
    we cannot do.
    A humane practice instruction is required when the
    voluntariness of a confession or admission is a live issue at
    trial, even in the absence of a request from defense counsel.
    Commonwealth v. Kolenovic, 
    478 Mass. 189
    , 198-199 (2017).
    However, a judge does not have an obligation to instruct on
    humane practice unless voluntariness actually "is made a live
    issue at trial."    See Commonwealth v. Alicea, 
    376 Mass. 506
    , 523
    (1978).
    There was no indication that voluntariness was part of his
    defense at trial.    Trial counsel did not present voluntariness
    as an issue in his opening statement, did not ask the defendant
    about the voluntariness of his statements during the defendant's
    direct examination, and did not raise the question of
    voluntariness during the closing argument.   See 
    Alicea, 376 Mass. at 523
    .   To the contrary, trial counsel made clear that
    voluntariness was not in play.    At two points during the trial,
    the judge asked defense counsel whether voluntariness was an
    issue as it pertained to the humane practice rule.    The first
    3 Because trial counsel did not request a   humane practice
    instruction (in fact, he specifically declined   one), any error
    would be reviewed for a substantial likelihood   of a miscarriage
    of justice. Commonwealth v. Dykens, 
    438 Mass. 827
    , 831 (2003).
    As discussed infra, we perceive no error.
    20
    time the judge inquired was prior to the Commonwealth's
    presentation of the video recording of the defendant's statement
    to investigators; the second time was during the charge
    conference.   Each time, trial counsel responded in the negative.
    As the defendant did not make the voluntariness of his
    statement to police a live issue at trial, and, in fact,
    indicated that it was not a live issue, the judge did not err by
    declining to give a humane practice instruction sua sponte.       See
    Commonwealth v. Nieves, 
    429 Mass. 763
    , 769-770 (1999) (despite
    evidence of defendant's drug use or drug withdrawal prior to
    arrest and confessions, "the issue of voluntariness was not
    raised with sufficient point to require an express admonition to
    the jury by the Court" [citation and quotations omitted]).
    b.     Joint venture instruction.   At trial, defense counsel
    included a joint venture instruction in a written request for
    jury instructions.   However, at the charge conference, he did
    not ask for the instruction.    The defendant now claims that he
    was entitled to such an instruction.     This argument lacks merit.
    First, there was no evidence presented at trial of a joint
    venture.    See Commonwealth v. Zanetti, 
    454 Mass. 449
    , 467 (2009)
    (joint venture instruction appropriate "[w]hen there is evidence
    that more than one person may have participated in the
    commission of the crime").     The Commonwealth's theory of the
    case was that the defendant killed the victim alone.     The
    21
    defendant's theory of the case was that, although he was present
    when the victim died, it was Garcia who killed her and that the
    defendant had attempted to intervene.     Because joint venture was
    not raised, no joint venture instruction was warranted.     See
    Commonwealth v. Gulla, 
    476 Mass. 743
    , 748 (2017) (judge need not
    instruct jury sua sponte on defense theory that defense counsel
    had made tactical decision not to pursue and where there is "a
    paucity of evidence to support such a defense").
    Second, the concerns that the defendant raises on appeal
    were actually addressed by the instructions that the judge gave.
    The defendant argues that although the judge instructed that
    mere presence and knowledge of the crime are not enough to
    convict, the instruction did not go far enough because it did
    not inform the jury that in order to demonstrate a joint
    venture, the Commonwealth had to prove beyond a reasonable doubt
    that the defendant knowingly participated in committing the
    crime with the requisite intent, and that mere association
    before and after the crime or a failure to prevent the crime is
    not sufficient to prove joint venture.4
    4 The instruction with which the defendant finds fault was
    as follows:
    "Before I launch into the various elements of murder, let
    me state something quite clearly. Mere presence at a crime
    scene is never enough to convict someone. Presence at a
    crime scene and knowledge of the crime is not enough to
    22
    In fact, the judge instructed the jury that, in order to
    find the defendant guilty, they had to find that there was
    evidence of each element of murder in the first degree beyond a
    reasonable doubt, including intent.    The judge also explained
    the intent requirements for each theory of murder in the first
    degree that was presented to them.    There was no question from
    the judge's instructions that the jury had to have found beyond
    a reasonable doubt that the defendant had the requisite intent
    to commit murder in order to find him guilty of that crime.
    Conversely, the judge made clear that if the jury did not find
    each element of each offense beyond a reasonable doubt, then
    they should acquit the defendant of that offense.    Further, the
    judge also repeatedly reminded the jury that it was the
    defendant's actions, and not the actions of another, that they
    were to assess.
    Finally, a joint venture instruction would not have
    benefited the defendant; to the contrary, it would have provided
    the jury with an alternative basis on which to convict him.       See
    Commonwealth v. Soares, 
    377 Mass. 461
    , 470, cert. denied, 
    444 U.S. 881
    (1979) ("The theory underlying joint enterprise is that
    one who aids, commands, counsels, or encourages commission of a
    crime while sharing with the principal the mental state required
    convict. To convict, you have to satisfy the elements of
    the particular offense that you are considering."
    23
    for the crime is guilty as a principal").     The joint venture
    instruction from the Zanetti decision is not given in lieu of an
    instruction on the principal offense, but is instead
    incorporated into the principal offense instruction.       Indeed,
    the purpose of the Zanetti instruction is to allow a jury to
    convict where it "unanimously finds that the defendant
    participated in the crime charged with the required intent but
    are divided as to the defendant's precise role in the commission
    of the crime."   See 
    Zanetti, 454 Mass. at 467
    .   If the jury were
    instructed that they could convict based on a theory of joint
    venture, and they found that the elements of joint venture were
    present, then they could have convicted the defendant of the
    principal offense.   See 
    id. at 466-467.
       Omitting the
    instruction was not error.
    4.   Motion for a new trial.    While his direct appeal was
    pending, the defendant filed a motion for a new trial with this
    court, claiming that the Commonwealth allegedly withheld
    evidence from defense counsel.     Alternatively, he argued that if
    defense counsel received the evidence and ignored it, he
    provided ineffective assistance of counsel.    The motion was
    considered by the trial judge, who denied it without an
    evidentiary hearing.   The defendant now contends that the motion
    judge abused his discretion by declining to hold an evidentiary
    24
    hearing prior to ruling on the motion for a new trial.    We
    disagree.
    A judge may decide a motion for a new trial without holding
    an evidentiary hearing if "no substantial issue is raised by the
    motion or affidavits."    See Mass. R. Crim. P. 30 (c) (3), as
    appearing in 
    435 Mass. 1501
    (2001).    On appeal, we review a
    decision not to hold such a hearing for an abuse of discretion.
    Commonwealth v. Denis, 
    442 Mass. 617
    , 628 (2004).    "[W]here, as
    here, the motion judge was also the trial judge, the judge's
    finding that the defendant's motion and affidavit did not raise
    a substantial issue is entitled to substantial deference, . . .
    and the judge could properly use his knowledge and evaluation of
    the evidence at trial in determining whether to decide the
    motion for a new trial without an evidentiary hearing" (citation
    omitted).   Commonwealth v. Wallis, 
    440 Mass. 589
    , 596 (2003).
    See Commonwealth v. Jenkins, 
    458 Mass. 791
    , 803 (2011)
    ("Reversal is particularly rare where the judge who acted on the
    motion was also the trial judge").
    Here, the defendant alleged that the Commonwealth withheld
    exculpatory evidence by failing to disclose a taped interview of
    the victim's son (the child), conducted within days of the
    killing.    The child, who was four years old at the time of his
    25
    mother's death, was in a bedroom when the victim was killed.5
    The judge reviewed the interview and accurately set forth the
    salient facts, which the defendant does not challenge. The child
    told an investigator that "the guy that killed mommy took the TV
    in her room."    When asked how he knew, he responded, "Cause when
    I woke up it wasn't there."     He went on, however, to deny having
    seen someone take the television, and to deny seeing anyone in
    the apartment when he was going to sleep or when he awoke.     In
    response to leading questions, the child reported that he saw
    the man's eyes, nose and mouth.     The child first indicated that
    he did not see the color of the man's skin; however, when the
    interviewer pressed by asking, "Was it brown?     Was it black?
    Was it white?"   The child said, "It was -- " and after a long
    pause, added "black."     Through similar questioning, the child
    reported that the man had no hair, no glasses, and was medium in
    size.    This description did not match that of the defendant, who
    is Caucasian and wears glasses.
    In his affidavit that accompanied the motion, the defendant
    claimed that had he had this information, he might have altered
    his trial strategy.     In particular, the defendant claimed that
    he might not have testified in his own defense and that he might
    have called the child as a witness instead.
    5 The child, who was seven years old at the time of the
    defendant's trial, did not testify.
    26
    In denying the defendant's motion, the motion judge ruled
    that no evidentiary hearing was necessary because the
    defendant's motion and supporting materials did not raise a
    substantial issue.   See 
    Denis, 442 Mass. at 628
    .   The motion
    judge concluded that even if the prosecution had failed to
    disclose the recorded interview, the defendant had not
    demonstrated that such nondisclosure created a substantial risk
    that the jury would have reached a different conclusion had the
    evidence been admitted at trial.   See Commonwealth v. Murray,
    
    461 Mass. 10
    , 21 (2011) (question is "whether the new evidence
    would probably have been a real factor in the jury's
    deliberations" [citation omitted]).6   The motion judge also
    concluded that there was no indication that the defendant had
    been deprived of an otherwise available, substantive ground of
    defense.    See Commonwealth v. Epps, 
    474 Mass. 743
    , 757 (2016).
    We agree.
    The motion judge first noted potential issues with the
    competence of the child witness.   Although a child is not per se
    incompetent by reason of age, a judge who reviews a recorded
    interview of the child would be "well aware of the age and
    6 Neither the defendant nor his trial counsel allege that
    they specifically requested the evidence at issue here, which
    would have required that we apply a standard more favorable to
    the defendant. See Commonwealth v. Ferreira, 
    481 Mass. 641
    , 650
    (2019).
    27
    corresponding limitations of the child."    Commonwealth v.
    Patton, 
    458 Mass. 119
    , 135 (2010).   As the motion judge
    observed, the child here gave contradictory accounts of the
    incident, stating initially that he saw and heard nothing on the
    night of his mother's murder.   Upon further prompting from the
    interviewer, the child then stated that he saw the person who
    took the television from his room; the child described this
    person as a male adult with black skin, no hair, and no glasses.
    Even had such testimony been found to be competent, the
    discrepancies in the recorded interview would have significantly
    diminished its weight and credibility.
    Moreover, at trial, the child's testimony would have been
    pitted against that of Garcia and McCarthy, among others, and
    the forensic evidence of the defendant's guilt.    In Commonwealth
    v. Lykus, 
    451 Mass. 310
    , 328-329 (2008), we considered a
    previously undisclosed Federal Bureau of Investigation report
    indicating that voice spectrogram analysis could not identify
    the defendant's voice on a recording.    See 
    id. We concluded
    that, because multiple lay witnesses had positively identified
    the voice as that of the defendant, there was no prejudice.       See
    
    id. Here, we
    agree with the motion judge that the defendant
    failed to carry his burden in showing a "substantial basis for
    claiming prejudice."   Commonwealth v. Watkins, 
    473 Mass. 222
    ,
    231 (2015).   Therefore, an evidentiary hearing to determine
    28
    whether the exculpatory evidence was, in fact, withheld from the
    defendant, or whether instead trial counsel performed in a
    constitutionally deficient manner, was not required.7
    5.   Review under G. L. c. 278, § 33E.   The defendant
    additionally asks us to exercise our extraordinary power to
    grant relief under G. L. c. 278, § 33E, based on any one of a
    number of factors.   Two such factors, alleged faulty jury
    instructions and the alleged failure to turn over the child's
    statement, have been 
    addressed supra
    .   We here address the
    remaining issues raised by the defendant under § 33E.
    First, the defendant claims that, because the victim had a
    prosthetic leg, prospective jurors should have been asked in
    voir dire about their attitudes toward people with disabilities.8
    7 The defendant further argues that, in evaluating
    prejudice, the motion judge erroneously considered the effect of
    his testimony at the trial (in which the defendant accused
    Garcia of the killing) on any subsequent trial. Where there is
    a claim that exculpatory evidence was withheld or counsel was
    ineffective, prejudice analysis looks to what would have
    occurred but for the error -- not what might occur at a
    prospective new trial. See generally Commonwealth v. Epps, 
    474 Mass. 743
    , 757 (2016); Commonwealth v. Murray, 
    461 Mass. 10
    , 21
    (2011). Here, regardless of the discussion about the impact of
    prior testimony on subsequent trials, the motion judge's
    conclusions relating to prejudice rested on the weight of the
    evidence presented at the trial. There was no error.
    8 The defendant does not present this argument as a basis
    for ineffective assistance of counsel. Nonetheless, we conclude
    that counsel was not ineffective here for not seeking individual
    voir dire of prospective jurors regarding their ability to be
    impartial in light of the victim's disability. Commonwealth v.
    Companonio, 
    445 Mass. 39
    , 52-53 (2005) (defendant's trial
    29
    "The scope of voir dire rests in the sound discretion of the
    trial judge, and a determination by the judge that a jury are
    impartial will not be overturned on appeal in the absence of a
    clear showing of abuse of discretion or that the finding was
    clearly erroneous" (citation omitted).   Commonwealth v. Bell,
    
    460 Mass. 294
    , 303 (2011), S.C., 
    473 Mass. 131
    (2015), cert.
    denied, 
    136 S. Ct. 2467
    (2016).   Here, in addition to asking
    specific questions about certain potential biases potential
    jurors might harbor, the judge asked the entire venire whether
    there was any reason why they might not be able to be fair and
    impartial, and asked follow-up questions of each person who
    responded affirmatively.   Each juror who comprised the jury that
    ultimately convicted the defendant was found to be indifferent.9
    There was no error.
    counsel not ineffective by failing to request that prospective
    jurors be asked about bias toward Cubans where no suggestion in
    record that ethnicity had any particular significance in
    killing).
    9 We note that a member of the venire and, later, a member
    of the deliberating jury, both of whom worked with disabled
    individuals, were excused. With regard to the latter, the issue
    was flagged during deliberations when the juror raised with the
    court the possibility that she had met the victim a few years
    prior. During a colloquy with the juror, defense counsel noted
    that the juror worked at a rehabilitation center and requested
    that the judge inquire whether the juror's place of employment
    would affect her ability to be fair. The juror indicated that
    her occupation would not affect her views on the case. She also
    told the parties and the judge that she had not said anything to
    the other jurors about the possibility that she knew the victim.
    Although the judge concluded after the colloquy that there was
    30
    Second, the defendant points to a statement made by trial
    counsel during closing argument in which counsel conceded that
    the jury could convict the defendant of murder as long as they
    "buy one hundred percent the testimony of Michael Garcia . . .
    [and] of Jason McCarthy."     The defendant does not identify, nor
    can we discern, any impropriety or ineffectiveness in trial
    counsel's statement.     Furthermore, the statement is taken out of
    context.   Before counsel made the statement the defendant
    complains of, he spent considerable time explaining why Garcia
    and McCarthy were not credible witnesses.
    Third, the defendant takes issue with trial counsel's
    admittedly tactical decision not to challenge the forensic
    evidence, and claims that he was prejudiced by "bloody images"
    shown to the jury.     The admissibility of expert testimony based
    on scientific knowledge is based on the reliability of the
    theory or process underlying the expert's testimony.
    Commonwealth v. Lanigan, 
    419 Mass. 15
    , 24 (1994).     The admission
    of such evidence is within the discretion of the trial judge.
    Commonwealth v. Camblin, 
    478 Mass. 469
    , 475 (2017).     As for the
    no reason to discharge the juror, in an abundance of caution,
    the judge excused her at the defendant's request. See G. L.
    c. 234A, § 39 ("The court shall have the discretionary authority
    to dismiss a juror at any time in the best interests of
    justice"). At the time he did so, there was no indication that
    the deliberations were at an impasse or were otherwise
    contentious.
    31
    jury's exposure to photographs of the victim and the crime
    scene, "[t]he weighing of the prejudicial effect and probative
    value of evidence is [also] within the sound discretion of the
    trial judge, the exercise of which we will not overturn unless
    we find palpable error." Commonwealth v. Bonds, 
    445 Mass. 821
    ,
    831 (2006).   There was no error in the admission or presentation
    of this evidence.
    We have considered the defendant's other arguments
    regarding the weight of the evidence and conclude that they are
    similarly without merit.   Further, we have reviewed the entire
    record in accordance with our duties under G. L. c. 278, § 33E,
    and we conclude that the interests of justice do not require a
    new trial or a reduction of the verdict of murder in the first
    degree.
    Judgments affirmed.