Commonwealth v. Kolenovic , 471 Mass. 664 ( 2015 )


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    SJC-08047
    COMMONWEALTH   vs.   ENEZ KOLENOVIC.
    Hampshire.      December 4, 2014. - June 23, 2015.
    Present:   Gants, C.J., Spina, Cordy, Botsford, Duffly, Lenk,
    & Hines, JJ.
    Homicide. Constitutional Law, Assistance of counsel. Practice,
    Criminal, Capital case, New trial, Assistance of counsel.
    Intoxication. Mental Impairment. Evidence, Intoxication.
    Indictment found and returned in the Superior Court
    Department on September 24, 1996.
    The case was tried before Mary-Lou Rup, J., and a motion
    for a new trial, filed on March 18, 2003, was heard by her.
    Thomas H. Townsend, Assistant District Attorney, for the
    Commonwealth.
    Michael R. Schneider for the defendant.
    HINES, J.   On February 2, 1999, a jury convicted the
    defendant, Enez Kolenovic, of murder in the first degree on the
    2
    theory of extreme atrocity or cruelty.1   The defendant's
    conviction stems from the stabbing death of David Walker
    (victim) during the early morning hours of September 16, 1996,
    following an altercation between the two in a bar.     While the
    defendant's appeal to this court was pending, he filed a motion
    for a new trial arguing ineffective assistance of counsel and
    error in the jury instructions.   We remanded the motion to the
    Superior Court.2   The judge, who had been the trial judge,
    granted the defendant's motion for a new trial based on
    ineffective assistance of counsel.   The Commonwealth appealed.
    We conclude that the judge erred and reverse the order allowing
    the motion for a new trial.
    1.   Background.   a. Facts presented at trial.   From the
    evidence presented at trial, the jury could have found the
    following facts.   In the early morning hours of September 16,
    1996, the defendant was riding in the back seat of his friend's
    vehicle after a day spent consuming alcohol.    His friend, John
    J. McCrystal, was driving; the defendant and another friend,
    1
    The jury did not find the defendant guilty of murder in
    the first degree on the theory of deliberate premeditation.
    2
    The defendant also moved for a reduction of the verdict
    pursuant to Mass. R. Civ. P. 25 (b), as amended, 
    420 Mass. 1502
    (1995). The judge denied the motion as to the request for a
    reduction in the verdict and the claimed error in the jury
    instructions.
    3
    Melissa Radigan, were seated in the back seat, and the victim
    was sitting directly in front of the defendant in the front
    passenger seat.    The defendant and the victim had had an
    altercation earlier in the evening.     The group was on the way to
    the defendant's house to continue drinking when the defendant
    reached forward and slit the victim's throat.     McCrystal stopped
    the vehicle, and the defendant got out, opened the front
    passenger door, and pulled the victim to the ground.     The
    defendant stabbed the victim multiple times while he lay on the
    concrete.
    The defendant spent the hours before the murder drinking
    to excess.     Beginning at approximately 12:45 P.M., the
    defendant, accompanied by a friend, David Bruso, consumed at
    least two beers and two double shots of one hundred proof
    alcohol at a bar owned by McCrystal.3    At 2:30 P.M., the
    defendant and Bruso left the bar, stopped at the liquor store
    Bruso owned to obtain eight to ten single-shot bottles of one
    hundred proof alcohol, and went to a barbecue at the local
    Knights of Columbus hall.     The two consumed the single-shot
    bottles, and the defendant also drank more than six beers and
    more than four shots of seventy-proof alcohol.
    3
    John J. McCrystal owned the building housing both his bar
    and the defendant's family's restaurant; he leased the
    restaurant portion to the defendant's family.
    4
    While at the barbecue, the defendant ran into Radigan, who
    was attending the event with her mother and sister.    For a brief
    time, the defendant and Radigan left the barbecue and returned
    to McCrystal's bar where they each had a drink. The two went
    back to the barbecue, where they continued to drink and fell
    down when they attempted to dance together.
    The defendant and Radigan left again at about 9:30 P.M. to
    return to McCrystal's bar.    Later in the evening, the defendant
    telephoned McCrystal to ask him to come to the bar to give the
    two a ride home.    McCrystal arrived and saw the defendant and
    Radigan in the restaurant portion of the building.    McCrystal
    then entered the bar to wait.    The victim arrived shortly
    thereafter.   The defendant and Radigan left the restaurant area,
    entered the bar, and sat next to McCrystal.    The defendant
    ordered a cognac on the rocks, and Radigan and McCrystal both
    ordered a beer.    The bartender hesitated in serving the
    defendant and Radigan because both appeared to "have been
    drinking quite a bit."    The bartender served the two only after
    McCrystal said he was driving them home.
    The altercation with the victim, a bar patron, began at
    approximately 11 P.M.    The defendant had thrown a drink on
    Radigan.   The victim reprimanded the defendant by telling him,
    "You don't do that to a lady" and "You don't treat a lady like
    that."   The defendant approached the victim, repeating, "Don't
    5
    cross my path."   The defendant challenged the victim to take
    their dispute outside; after trying to ignore the defendant, the
    victim agreed.
    The two men continued their argument outside, frequently
    bumping chests.   As the bar was across from the police station,
    a police officer arrived quickly and asked them to break it up.
    The officer recognized the two men and told them he did not want
    any "problems out here on the street."   Each man responded that
    there was no problem and returned inside.   The defendant then
    bought the victim a beer.
    The parties were joined at the bar by Bruso, who had spent
    several hours asleep in his vehicle after leaving the barbecue.
    Bruso described the defendant's demeanor, noting that "his eyes
    were very glossy.   He seemed very intoxicated to the point of
    almost being asleep, but not asleep.   His eyes were open."
    Although Bruso had seen the defendant intoxicated on many
    occasions, he noted that "it was the drunkest I've ever seen
    him."   Another patron, Irene Grigas, who arrived after the
    altercation with the victim, similarly noted that she had never
    seen the defendant in that state.   Bruso offered to give the
    defendant a ride home but McCrystal told Bruso that he was
    giving the defendant a ride.   Bruso left the bar.
    The bartender started to close the bar about 12:30 A.M. and
    the defendant, Radigan, and McCrystal made plans to go back to
    6
    the defendant's apartment to "keep the party going."      The victim
    declined McCrystal's invitation to join them, opting instead to
    assist the bartender in closing for the night.   Before
    departing, the defendant went to the restaurant side of the
    building, where he remained for about five minutes before
    meeting with the others.   While inside, he put on a winter
    jacket that he stored at the restaurant, even though the weather
    was "nice" and the evening was an "Indian Summer September type
    of night."
    McCrystal carried some beer to his vehicle, where he sat in
    the driver's seat to await the defendant.   Radigan joined him
    and sat in the front passenger seat.   The defendant arrived;
    when he was told the victim would not be joining them, he
    returned to the bar.   After a few minutes, the defendant emerged
    from the bar followed by the victim.   The defendant asked
    Radigan to get in the back seat.   Radigan complied and sat
    behind McCrystal.   The defendant directed the victim to sit in
    the front passenger seat and he sat in the back seat behind the
    victim.
    McCrystal drove the short distance to the defendant's
    apartment complex, stopping for a few minutes to talk to a
    police cruiser that pulled alongside his vehicle.   About one
    hundred yards from the complex, the defendant leaned forward and
    put his arm around the victim.   McCrystal admonished them
    7
    because he thought the two were "fooling around."     Radigan heard
    McCrystal shouting and then saw the defendant lean forward
    toward the victim.   In the immediate aftermath of that event,
    both McCrystal and Radigan felt and saw blood.     McCrystal
    stopped the vehicle.
    The defendant pulled the victim from the vehicle and
    continued to stab him.     McCrystal shouted to the defendant to
    stop and "get off him, you're going to kill him."     The defendant
    replied, "I think it's too late for that."     McCrystal was able
    to push the defendant off the victim when he noticed, for the
    first time, that the defendant had a knife in his hand.
    McCrystal recognized the knife as the type the defendant used at
    his family's restaurant.
    The defendant said to McCrystal, "You've got to be with me
    on this."   McCrystal responded, "What, are you crazy? . . . No
    way."   The defendant's face then became more serious and he ran
    past McCrystal into the driver's seat of McCrystal's vehicle.
    McCrystal attempted to reach through the window and shut off the
    engine but was unsuccessful.    In response to a resident's
    telephone call, Scott J. Crevier, a Ware police officer, arrived
    just as the defendant entered McCrystal's vehicle.     While the
    defendant was turning the vehicle around in the parking lot,
    Crevier attempted to block the exit with his cruiser.    The
    defendant "narrowly missed" striking the cruiser and took off
    8
    out of the parking lot.    After a high speed car chase, at times
    approaching 110 miles per hour, police eventually were able to
    apprehend the defendant, who resisted handcuffs until he was
    sprayed with mace.
    Police accompanied the defendant to the hospital at 2:55
    A.M. to be treated for the after-effects of the mace.    The
    defendant smelled of alcohol and admitted to drinking a lot.
    The emergency room physician did not perform any alcohol
    ingestion evaluation because the defendant's "gait was normal,
    his speech was clear, his coordination was intact, [and] he was
    cooperative."   Later, at the police station, a police officer
    observed that the defendant's eyes were "bloodshot, glassy, and
    watery"; his speech was "very slow"; and he "took a while" to
    answer questions.
    The victim was pronounced dead at 1:28 A.M.    The medical
    examiner who performed his autopsy opined that the victim
    suffered a "major fatal wound" that was one inch deep and six
    and one-half inches long and wrapped from the midline of the
    victim's neck to behind his ear.   The victim had a total of nine
    knife wounds to his neck, head, chest, abdomen, shoulder, and
    back.
    The defendant presented an intoxication defense at trial,
    seeking to persuade the jury that because of his long-standing
    history of alcoholism and his excessive consumption of alcohol
    9
    in the twelve hours preceding the killing, he was not capable of
    forming the specific intent required for deliberately
    premeditated murder or to act with extreme atrocity or cruelty
    in causing the victim's death.     Three witnesses -- David Bruso,
    Irene Grigas, and Dr. Robert A. Fox, Jr. -- testified in support
    of the defendant's theory of defense.
    As already noted, Bruso and Grigas recounted aspects of
    the day of drinking and the defendant's demeanor while in their
    presence.    Dr. Fox, a psychiatrist with an expertise in
    substance abuse, opined that because of the defendant's level of
    intoxication at the time of the killing, the defendant's
    thinking and reasoning functions would have been highly impaired
    and his higher functions required to premeditate, form intent,
    or to process what he was doing would have been impaired.     He
    opined that the defendant's blood alcohol content at the time of
    the murder was likely between .26 and .3 per cent,4 and explained
    the physiological effects of alcohol on the body, including on
    the ability to think, reason, remember, make connections, and
    concentrate, and the lowering of a person's inhibitions.
    4
    Two breathalyzer tests were administered to the defendant
    approximately four hours after the murder. At that time, his
    blood alcohol level registered .17 and .16 per cent. The
    defendant's blood alcohol content at the time of the murder was
    extrapolated from these two tests.
    10
    b.   The motion for a new trial.5   In his motion for a new
    trial, the defendant argued that trial counsel was ineffective
    in "fail[ing] to fully investigate, present and argue evidence
    of the defendant's severe neuropsychiatric disorders."    The
    judge conducted an evidentiary hearing and considered first the
    "performance prong" of the Saferian test, or whether counsel's
    performance fell "measurably below that which might be expected
    from an ordinary fallible lawyer."   Commonwealth v. Saferian,
    
    366 Mass. 89
    , 96 (1974).   The judge concluded that the defendant
    met the performance prong of the Saferian test because "further
    evaluation of the defendant's mental condition would have done
    nothing to diminish and potentially much to enhance the only
    possible defense available to the defendant."
    As a preface to our analysis of the Commonwealth's claim of
    error, we summarize the evidence presented at the hearing and
    relied on by the judge in her decision.6    The evidence at the
    hearing consisted of testimony from trial counsel; Dr. Fox, the
    5
    We note that the judge devoted an extraordinary level of
    attention to the issues raised by the defendant's motion. The
    motion for a new trial was filed on March 21, 2003, and after a
    series of hearings, the motion, which was analyzed in two
    comprehensive memoranda of decision issued on January 19, 2010,
    and November 12, 2013, was allowed.
    6
    Because we do not reach the prejudice prong of
    Commonwealth v. Saferian, 
    366 Mass. 89
     (1974), we do not detail
    the evidence on that issue.
    11
    expert retained by trial counsel to conduct a pretrial
    assessment of the defendant's history of alcohol dependence and
    intoxication level; and affidavits from three experts, retained
    after trial.
    The defendant's trial counsel, found by the judge to be an
    experienced and successful criminal trial attorney, was retained
    by the defendant's family to represent the defendant at the
    trial.   The attorney met with the defendant ten or more times in
    preparation for the trial.     During those meetings, he "perceived
    no evidence of mental illness or impairment" and received no
    information from the defendant or his family to suggest any
    mental abnormality.   Recognizing, however, that the defendant
    was highly intoxicated at the time of the murder, the attorney
    retained the services of Dr. Fox and requested an opinion
    whether, because of the defendant's alcohol consumption, the
    defendant had the "ability to form the specific intent necessary
    for first degree murder."    Although the request was limited to
    this question, counsel did not object to a full psychiatric
    evaluation of the defendant.
    Dr. Fox examined the defendant over the course of eight
    hours and thereafter advised trial counsel that he was prepared
    to opine at trial that the defendant was incapable of forming
    the specific intent required for murder in the first degree.       In
    a letter written subsequent to the initial meetings with counsel
    12
    and a few days before trial, Dr. Fox stated his opinion to "a
    reasonable degree of medical certainty . . . that [the
    defendant] was unable to appreciate the wrongfulness of his act
    and was unable to conform his conduct to the requirements of
    law."   He also informed counsel that he believed that the
    defendant had a dual diagnosis of posttraumatic stress disorder
    (PTSD) and alcoholism, and suggested further testing by a PTSD
    expert.   Counsel, however, declined to seek further evaluation
    of the defendant for PTSD after meeting with Dr. Fox several
    times during the trial preparation and after considering all of
    the other information available from his investigation into the
    case.   He decided, as a matter of strategy, to pursue only an
    intoxication defense and to limit Dr. Fox's trial testimony to
    the defendant's history of alcohol dependence and intoxication
    at the time of the murder.
    Counsel's explanation for this strategic choice was that he
    believed, based on his experience as a criminal defense lawyer,
    "that juries almost never accept an insanity defense."   The
    attorney added that (1) he believed a dual defense based on both
    intoxication and PTSD could cause a loss of credibility with the
    jury and the PTSD defense could water down the substantial
    evidence he had developed to support an intoxication defense;
    and (2) he was skeptical of some of Dr. Fox's conclusions and
    thought the PTSD defense was based on a "shaky factual
    13
    foundation."    He believed there was a "real chance that [the
    intoxication] evidence was strong enough to win a manslaughter
    verdict" because it was based on undisputed evidence
    demonstrating the defendant's lengthy history of alcoholism and
    extreme amount of alcohol he had consumed at the time of the
    killing.    He noted as well his concern that a defense of lack of
    criminal responsibility would allow the Commonwealth's experts
    to have access to the defendant and vitiate the advantage of the
    overwhelming evidence of the defendant's intoxication.7
    The judge credited the attorney's explanation of his
    strategic decisions and his recollection that he had discussed
    the decision with the defendant, who had agreed with counsel's
    strategy.   In addition, she found that defense counsel "did not
    ignore Dr. Fox's opinion that the defendant suffered as well
    from PTSD, [but] he made a tactical decision that the PTSD
    defense suggested by Dr. Fox was unlikely to succeed."    The
    judge also found that trial counsel "vigorously argued all the
    evidence [and] succeeded in part, as the jury found the
    defendant not guilty of murder by deliberate premeditation."     At
    the same time, she noted that counsel had only a rudimentary
    7
    The judge noted that only McCrystal disputed the extent of
    the defendant's intoxication but observed that McCrystal had a
    "clear motive" to minimize because of the possibility of a civil
    lawsuit as the owner of the bar where the defendant consumed
    alcohol in the hours before the killing.
    14
    understanding of PTSD and had based his decision to forgo
    further investigation of the condition on his personal
    assessment of the defendant during their meetings.    In addition,
    she noted defense counsel's "general lack of faith in psychiatry
    . . . as a defense in criminal trials."
    Dr. Fox confirmed that he had reported his PTSD diagnosis
    to trial counsel in advance of the trial and advised the
    attorney to pursue further evaluation of that condition.      Dr.
    Fox recalled that at one of the trial preparation meetings,
    trial counsel advised him that he intended to present only the
    intoxication defense and explained that his questions during the
    trial would be limited to that issue.   In recounting his
    pretrial involvement with trial counsel, however, Dr. Fox
    criticized counsel's strategic choices and testified that he
    disagreed with counsel's intoxication defense strategy.     He
    expressed "frustrat[ion]" that he did not have the "opportunity"
    for a full discussion of the issue with counsel.     As to this
    point, however, the judge found that Dr. Fox told defense
    counsel that "PTSD might be a defense worth pursuing" and that
    "further evaluation and objective testing would be useful if the
    defense were to be presented in court" (emphases added).      The
    judge made no finding that Dr. Fox ever expressed to counsel his
    disagreement with the trial strategy.   As the trial record
    15
    demonstrates, Dr. Fox testified at trial in accordance with
    trial counsel's defense strategy.
    The three experts, in their affidavits based on extensive
    posttrial testing and interviews with defendant's family,
    definitively diagnosed the defendant with PTSD and other mental
    diseases, including alcohol dependency, brain injury,
    intermittent explosive disorder, dysthymic disorder, social
    phobia, generalized anxiety disorder, and several unspecified
    personality disorders.8    All of these experts opined that
    because of the defendant's multiple mental disorders, he lacked
    the capacity to appreciate the wrongfulness of his conduct and
    to conform his conduct to the requirements of the law.
    2.   Discussion.   a. Standard of review.   "In the absence of
    constitutional error, a motion for a new trial is addressed to
    the sound discretion of the trial judge," Commonwealth v. Smith,
    
    381 Mass. 141
    , 142 (1980), who may grant a new trial "if it
    appears that justice may not have been done."    Mass. R. Crim. P.
    30 (b), as appearing in 
    435 Mass. 1501
     (2001).    Judges are to
    apply the rule 30 (b) standard rigorously and should grant such
    motion only if the defendant comes forward with a credible
    reason that outweighs the risk of prejudice to the Commonwealth.
    8
    The experts did not all diagnose the same mental diseases,
    with the exception of posttraumatic stress disorder, alcohol
    dependency, and brain injury.
    16
    Commonwealth v. DiCicco, 
    470 Mass. 720
    , 728 (2015), citing
    Commonwealth v. Fanelli, 
    412 Mass. 497
    , 504 (1992).     On the
    Commonwealth's appeal of the grant of a defendant's motion for a
    new trial, we consider whether the judge committed a significant
    error of law or abuse of discretion in allowing the defendant's
    motion.   Commonwealth v. Lane, 
    462 Mass. 591
    , 597 (2012).       That
    discretion, however, "is not boundless and absolute."     See
    Commonwealth v. Genius, 
    402 Mass. 711
    , 714 (1988).    Under the
    abuse of discretion standard, the issue is whether the judge's
    decision resulted from "a clear error of judgment in weighing
    the factors relevant to the decision . . . such that the
    decision falls outside the range of reasonable alternatives"
    (quotation and citation omitted).9   L.L. v. Commonwealth, 
    470 Mass. 169
    , 185 n.27 (2014).
    On review, "[a] judge's findings of fact after an
    evidentiary hearing on a motion for a new trial will be accepted
    if supported by the record."   Commonwealth v. Walker, 
    443 Mass. 213
    , 224 (2005).   Where, as here, the motion judge is also the
    9
    In L.L. v. Commonwealth, 
    470 Mass. 169
    , 185 n.27 (2014),
    we "retired" the prior standard for abuse of discretion that
    deferred to the judge except on a showing that "no conscientious
    judge, acting intelligently, could honestly have taken the view
    expressed by [her]" (quotation and citation omitted). While
    deference is still appropriate, the revised abuse of discretion
    standard confirms that an appellate court is entitled to correct
    a decision that is based on an erroneous view of the law or a
    clearly erroneous assessment of the evidence.
    17
    trial judge, we give "special deference" to the judge's findings
    of fact and the ultimate decision on the motion.   Lane, 462
    Mass. at 597.   We consider the record in its entirety, however,
    to determine whether "there exists in the record before us
    evidence to support the judge's decision to order a new trial."
    Id., quoting Commonwealth v. Preston, 
    393 Mass. 318
    , 324 (1984).
    b.   Ineffective assistance of counsel.   "Where a new trial
    is sought based on a claim of ineffective assistance of counsel,
    the burden of proving ineffectiveness rests with the defendant."
    Commonwealth v. Montez, 
    450 Mass. 736
    , 755 (2008), citing
    Commonwealth v. Comita, 
    441 Mass. 86
    , 90 (2004).   We begin the
    analysis with an overview of the legal principles underlying the
    judge's allowance of the defendant's motion for a new trial on
    the ground of ineffective assistance of counsel.   Under the
    familiar Saferian test, a defendant is denied constitutionally
    effective assistance of counsel if the representation fell
    "measurably below that which might be expected from an ordinary
    fallible lawyer," and that the performance inadequacy "likely
    deprived the defendant of an otherwise available, substantial
    ground of defence."   Saferian, 
    366 Mass. at 96
    .   The Saferian
    test is implicit recognition that the constitutional interest
    undergirding the assistance of counsel jurisprudence is the
    right to a fair trial.   Although a claim of ineffective
    assistance of counsel may not prevail unless counsel's
    18
    performance affects the fairness of the trial, we need not reach
    that analysis if we determine that counsel's representation did
    not fall measurably below that which might be expected from an
    ordinary fallible lawyer.   See Commonwealth v. Haley, 
    413 Mass. 770
    , 775 (1992).   See also Strickland v. Washington, 
    466 U.S. 668
    , 689 (1984) ("[T]he purpose of the effective assistance
    guarantee . . . is simply to ensure that criminal defendants
    receive a fair trial," not to "improve the quality of legal
    representation, although that is a goal of considerable
    importance to the legal system").   "In cases where tactical or
    strategic decisions of the defendant's counsel are at issue, we
    conduct our review with some deference to avoid characterizing
    as unreasonable a defense that was merely unsuccessful."
    Commonwealth v. Valentin, 
    470 Mass. 186
    , 190 (2014), quoting
    Commonwealth v. White, 
    409 Mass. 266
    , 272 (1991).   This measure
    of deference is as it must be because, ultimately, counsel alone
    has the benefit of the full factual picture that dictates the
    choice of those matters to be revealed to the fact finder and
    those that are better left unexposed to court room scrutiny.
    From that vantage point, counsel "knows best how to defend a
    client."   Commonwealth v. Glover, 
    459 Mass. 836
    , 843 (2011).
    Where, as here, the defendant's ineffective assistance of
    counsel claim is based on a tactical or strategic decision, the
    test is whether the decision was "'manifestly unreasonable' when
    19
    made."   Commonwealth v. Acevedo, 
    446 Mass. 435
    , 442 (2006),
    quoting Commonwealth v. Adams, 
    374 Mass. 722
    , 728 (1978).      The
    inquiry involves both temporal and substantive considerations.
    The temporal consideration limits the effect of hindsight by
    requiring a focus on the point in time when counsel made the
    challenged strategic decision.   Glover, 459 Mass. at 843,
    quoting Commonwealth v. Fenton F., 
    442 Mass. 31
    , 38 (2004).
    Substantively, "[o]nly 'strategy and tactics which lawyers of
    ordinary training and skill in the criminal law would not
    consider competent'" are manifestly unreasonable.   Commonwealth
    v. Pillai, 
    445 Mass. 175
    , 186-187 (2005), quoting Commonwealth
    v. Levia, 
    385 Mass. 345
    , 353 (1982).
    c.   Manifest unreasonableness of counsel's strategic
    decisions.   Deference to the motion judge's discretion
    notwithstanding, see Commonwealth v. Lucien, 
    440 Mass. 658
    , 669-
    670 (2004), we conclude for the reasons explained infra that the
    record before us lacks support for the judge's ruling that
    counsel's duty to provide constitutionally effective assistance
    of counsel compelled further investigation of Dr. Fox's PTSD
    diagnosis and the presentation of a defense based on that
    diagnosis.
    First, the judge erred by misapplying the "manifestly
    unreasonable" test to the facts of this case.   Reasonableness in
    the context of an ineffective assistance of counsel claim is an
    20
    objective standard that measures counsel's conduct against that
    which "lawyers of ordinary training and skill in the criminal
    law" would consider competent.    See Pillai, 445 Mass. at 186-
    187.   See Saferian, 
    366 Mass. at 96
    .    Although our cases
    applying the manifestly unreasonable test have not precisely
    marked the limits of a trial attorney's prerogative to make
    strategic decisions, we have been clear that reasonableness does
    not demand perfection.   Valentin, 470 Mass. at 190.    See
    Strickland, 
    466 U.S. at 691
    .     Nor is reasonableness informed by
    what hindsight may reveal as a superior or better strategy.
    Commonwealth v. Bernier, 
    359 Mass. 13
    , 17 (1971).      Counsel may
    strive for perfection, but only competence or the avoidance of a
    "serious incompetency" is required.     Walker, 443 Mass. at 225.
    The manifestly unreasonable test, therefore, is essentially a
    search for rationality in counsel's strategic decisions, taking
    into account all the circumstances known or that should have
    been known to counsel in the exercise of his duty to provide
    effective representation to the client and not whether counsel
    could have made alternative choices.     Id. at 227-228.   Counsel's
    strategic choices did not yield an outcome favorable to the
    defendant and, in hindsight, he could have done more or made
    different choices.   Nonetheless, those strategic choices were
    rational and entirely consistent with what "lawyers of ordinary
    training and skill in the criminal law" would deem to be
    21
    competent.   Pillai, 445 Mass. at 186-187; Saferian, 
    366 Mass. at 96
    .
    Counsel's decision to forgo further investigation of the
    defendant's mental state was an informed exercise of his
    prerogative to decide on the defense strategy.   As the judge
    found, counsel was aware of the options but made the strategic
    decision that a lack of criminal responsibility or diminished
    capacity defense was unlikely to succeed and that further
    investigation was unnecessary.   Indeed, Dr. Fox's letter of
    January 5, 1999, proposing these options to counsel suggested
    that it would have been necessary to pursue further
    investigation only if counsel intended to choose either defense.
    Because counsel had done what was necessary to identify the
    defense options based on PTSD, we discern no basis to hold that
    he was required to exhaustively explore and identify the
    constellation of mental diseases later identified in the
    posttrial examinations.   See Commonwealth v. Candelario, 
    446 Mass. 847
    , 856-858 (2006).    Cf. Walker, 443 Mass. at 223.
    Contrast Commonwealth v. Roberio, 
    428 Mass. 278
    , 280 (1998),
    S.C., 
    440 Mass. 245
     (2003).
    In reviewing the judge's assessment of defense counsel's
    strategy, we cannot blind ourselves to what counsel and other
    experienced trial attorneys know all too well:   the extreme
    difficulty in successfully defending a murder case based on a
    22
    lack of criminal responsibility defense.
    10 Walker, 443
     Mass. at
    226 & n.2 (affirming judge's finding of no ineffective
    assistance of counsel and noting "insanity verdicts are rare,
    even when . . . there is strong evidence of mental illness or
    bizarre human conduct").   We reiterate here the judge's
    references to counsel's concern that a lack of criminal
    responsibility defense would expose the defendant's mental
    condition to examination by the Commonwealth's experts.     This
    possibility was a powerful disincentive to pursue a defense
    based on a newly diagnosed condition that likely would have been
    undermined by the Commonwealth's expert.     Given the substantial
    agreement of all the trial witnesses, including the
    Commonwealth's witnesses, on the defendant's extreme
    intoxication at the time of the killing, counsel was entitled to
    weigh this factor more heavily in his strategic choice of a
    defense.   From the perspective of the hypothetical lawyer of
    ordinary skill and training, the choice between a defense that,
    in counsel's reckoning at least, would require riding "two
    horses," and a viable alternative defense based on the factually
    unassailable intoxication defense developed by counsel, would
    10
    See, e.g., Commonwealth v. Rosenthal, 
    432 Mass. 124
    , 124-
    125 (2000) (defendant convicted of murder despite insanity
    defense where victim's organs were removed and impaled on
    stake).
    23
    pose little difficulty.    Thus, we conclude that the judge's
    implicit finding that the hypothetical attorney of ordinary
    skills and training would perceive a "serious incompetency" in
    counsel's strategy to forgo an insanity defense in this case was
    error.    See Saferian, 
    366 Mass. at 96
    .
    Further, the adequacy of counsel's performance is supported
    by Dr. Fox's agreement to testify at trial in accordance with
    counsel's strategy to defend against the indictment based only
    on the intoxication defense.11   Dr. Fox's participation in the
    trial on these terms would not have communicated to counsel the
    fundamental disagreement that Dr. Fox asserted at the posttrial
    proceedings.    Rather, counsel likely would have assumed that his
    approach was acceptable from a medical point of view.    See
    Commonwealth v. Gaboriault, 
    439 Mass. 84
    , 95 (2003) (rejecting
    defendant's claim that trial counsel was manifestly unreasonable
    by failing to obtain expert's opinion on criminal responsibility
    prior to trial where counsel obtained opinion from another
    expert and this expert did not volunteer such opinion until
    after trial).   Where this is the case, we see no basis to fault
    counsel for elevating his concern for a viable legal defense
    11
    Dr. Fox testified as a witness for the defense as
    requested by counsel notwithstanding his advice that "PTSD might
    be a defense worth pursuing" and that "further evaluation and
    testing would be useful if the defense were to be presented in
    court."
    24
    over a possible alternative approach likely fraught with
    difficulty.
    The judge's assessment of counsel's performance also is a
    factor in our analysis.   Here, the judge found that defense
    counsel "is one of the most experienced and successful criminal
    trial attorneys in Western Massachusetts" and that, except for
    the strategic decision challenged by the defendant in his motion
    for a new trial, "counsel's performance at trial was in all
    other respects exemplary."   Significantly, the judge also found
    that counsel "took appropriate steps to investigate various
    defenses" and "did not ignore [the defense expert's] opinion
    that the defendant suffered . . . from PTSD."   Where counsel's
    performance is "in all other respects exemplary,"12 we are
    persuaded that the measure of deference generally accorded to
    counsel's strategic choices was not applied in this case.
    As a closing observation on this issue, we emphasize that
    caution is warranted in any suggestion that an attorney
    representing a defendant in a murder case must submit to the
    advice of a chosen expert.   Medical experts are not attorneys.
    A defendant's legal counsel is uniquely qualified to assess the
    12
    The judge noted that "counsel vigorously argued all the
    evidence . . . [and that the] impairment defense appeared to
    have succeeded, in part, as the jury found the defendant not
    guilty of murder by deliberate premeditation."
    25
    nuances that attend the development of the trial strategy.       See
    Glover, 459 Mass. at 843.   Although counsel's strategic choices
    are always open to review, we are hesitant to endorse an
    analytical approach to ineffective assistance of counsel claims
    that permits a retained expert to support or otherwise cooperate
    with the defense strategy at trial and later repudiate that
    participation by criticizing or attacking the very role he
    played in the trial.
    We appreciate that our appellate cases offered no clear
    guidance to the judge in her analysis of counsel's strategic
    choices; however, the cases relied upon by the judge do not
    require a finding that counsel's strategic decisions were
    manifestly unreasonable.    In Walker, 443 Mass. at 223, the issue
    centered on counsel's decision not to investigate a defense of
    lack of criminal responsibility.    Despite defense counsel's
    knowledge in that case that the defendant had years prior
    attempted suicide and had been discharged from the armed
    services for psychological reasons, id. at 225-226, the court
    held that because of "scant" evidence that the defendant had a
    history of mental health problems, counsel's decision not to
    investigate lack of criminal responsibility was not a manifestly
    unreasonable strategic choice.     Id. at 227-228.   The judge
    extrapolated from Walker a constitutional duty to explore fully
    the nature and extent of defendant's PTSD, apparently based on
    26
    the defendant's presentation of "strong expert opinion evidence
    that he suffered from mental illness at the time of the
    homicide."   According to this logic, if counsel was excused from
    the obligation to investigate a lack of criminal responsibility
    defense where the evidence of mental disease was minimal or
    nonexistent, then counsel is obliged to investigate where there
    is strong evidence of such a condition.
    The judge's reference to the "strong" posttrial evidence of
    the defendant's mental illness at the time of the homicide
    suggests an undue reliance on hindsight.    As we often have
    cautioned, a court may not apply the benefit of hindsight in
    assessing counsel's strategic choices.     See Strickland, 
    466 U.S. at 680
    ; Glover, 459 Mass. at 843.   The issue for the judge
    considering ineffective assistance of counsel on this ground is
    whether the strategic choice was reasonable at the time made.
    See Strickland, 
    supra;
     Glover, supra.     We reiterate that despite
    the substantive appeal of the new information, the issue should
    not be resolved by giving undue weight to facts unearthed during
    counsel's posttrial research.   Rather, the issue is whether
    counsel was under a duty to make that same inquiry based on what
    he knew or should have known at the time of his trial
    preparation.   Here, trial counsel already was aware of the
    implications of the defendant's PTSD diagnosis and made a
    27
    rational choice to rely on a different defense; he was under no
    duty to seek further expert opinion on the point.
    Candelario, 446 Mass., also relied on by the judge, does
    not support the finding that counsel's strategic choices were
    manifestly unreasonable.     In Candelario, supra at 853, trial
    counsel retained a mental health expert to evaluate the
    defendant before trial.    Although the expert diagnosed the
    defendant with a frontal lobe deficit, trial counsel decided not
    to present an insanity defense and focused instead on winning a
    verdict of murder in the second degree or manslaughter.     Id. at
    853-854.   This court affirmed the denial of a motion for a new
    trial where the evidence suggested that the defendant was a
    malingerer and his mental health issues were contrived, and
    concluded that trial counsel's decision was reasonable in light
    of the obvious "weaknesses in a defense of lack of criminal
    responsibility."    Id. at 854, 856-857.   Thus, Candelario is in
    accord with the view stated above that defense counsel may
    reject an expert's opinion of a defendant's mental condition if
    it is in the best interest of the trial strategy.     Glover, 459
    Mass. at 843.
    c.     Prejudice.   Based on our conclusion that the judge
    erred in ruling that counsel's strategic choice to forgo further
    investigation of the defendant's mental condition and to present
    only an intoxication defense were manifestly unreasonable, we
    28
    need not address the issue of prejudice.   Glover, 459 Mass. at
    844-845.
    Order granting motion for
    a new trial reversed.