Botsford, J.
A Superior Court jury convicted the defendant Lastarandre Bell of murder in the first degree of Julie Ann Nieves on a theory of felony-murder.
The defendant also was convicted of armed home invasion, arson, and two charges of violation of an abuse prevention order. The defendant appeals both from his convictions and from the denial of his motion for a new trial. He claims that (1) the merger doctrine renders legally impossible his felony-murder conviction because the underlying felony and the homicide share the same conduct, and defense counsel was ineffective for not raising the issue; and (2) defense counsel was ineffective as well in several other respects, including the manner in which he investigated and tried the case. The defendant argues also that relief is warranted pursuant to G. L. c. 278, § 33E. For reasons different from those advanced by the defendant, we conclude, pursuant to our review of the entire case under § 33E, that the absence of an instruction on felony-murder in the second degree with arson as the predicate felony requires a reversal of the defendant’s conviction of felony-murder in the first degree.
Accordingly, we reverse the defendant’s conviction of that crime, set aside the verdict, and remand the case to the Superior Court for further proceedings. On remand, at the Commonwealth’s option, a verdict of guilty of felony-murder in the second degree may be entered in lieu of a new trial on the murder indictment. We affirm the defendant’s other convictions.
Background.
The events giving rise to this case resulted in a grand jury charging the defendant with nine separate offenses in indictments handed up in February of 2007: (1) murder in the first degree of Julie Ann Nieves, G. L. c. 265, § 1; (2) arson, G. L. c. 266, § 1; (3) armed home invasion, G. L. c. 265, § 18C; (4)-(5) two charges of assault by means of a dangerous weapon, a knife, against Julie Ann Nieves and Tiffany Cruz, respectively, G. L. c. 265, § 15B (b); (6) assault and battery by
means of a dangerous weapon, a hammer or knife, against Julissa Cruz, G. L. c. 265, § 15A
(b);
(7) assault and battery by means of a dangerous weapon, gasoline, against Larry Key, G. L. c. 265, § 15A (h); and (8)-(9) two charges of violating an abuse prevention order, G. L. c. 209A, § 7. Not all nine charges, however, reached the jury. Before jury empanelment began, the prosecutor stated that the Commonwealth would file a nolle prosequi on Counts 4 and 5, and the Commonwealth did not proceed on either charge at trial.
At the close of the Commonwealth’s case-in-chief, defense counsel moved for entry of a required finding of not guilty on Count 6, which the Commonwealth did not oppose and which the trial judge allowed. As indicated, the jury convicted the defendant on the charges of murder, arson, armed home invasion, and the two charges of violation of an abuse prevention order (Counts 1, 2, 3, 8, and 9).
The jury acquitted the defendant of the charge of assault and battery by means of a dangerous weapon against Larry Key (Count 7).
After he filed a notice of appeal from his convictions, the defendant filed in this court a motion for a new trial that we remanded to the Superior Court for disposition. The trial judge denied the motion.
We summarize the facts as the jury could have found them at trial. On January 7, 2007, Julie Ann Nieves, her daughter Jessica Nieves, and her son Daniel Nieves were living at 11 Warner Street in Springfield.
This was the home of Julie Ann’s sister, Caroline Cruz, who lived there with her two daughters, Tiffany Cruz and Julissa Cruz,
and Tiffany’s boy friend, Larry Key. The defendant, at the time Jessica’s boy friend, had moved with the Nieves family to Springfield from New York City in October,
2006, and into Caroline’s apartment. On November 3, 2006, both Jessica and Caroline obtained restraining orders against the defendant. According to Jessica, the basis for the restraining orders was the fact that the defendant had “made threatening comments towards [her] as far as hurting [her] or [her] family.” On November 6, the defendant moved out of 11 Warner Street to an apartment building a short distance away.
On the night of January 7, 2007, all the residents of the Warner Street apartment were at home. The defendant dialed Daniel’s Nextel telephone twice, both calls occurring shortly before 9:30 p.m.
The first time, the defendant asked to speak with Jessica, but Daniel ignored the call. A few minutes later, the defendant called Daniel again, asking in an angrier tone to speak to Jessica; Daniel again ignored the call. Around 9:30 p.m., the occupants of the home, at the time in various rooms, heard what sounded like glass shattering and also heard Julissa scream. Arriving in the kitchen area, they saw the defendant approaching them from the living room where a window had been broken. He was holding a bottle or container in his hand from which he sprayed some type of liquid around him as he ran toward those present in or just outside the kitchen.
Key saw a knife sticking out of the defendant’s pocket and also saw the defendant, while holding something sharp, swing at Julie Ann and Tiffany as they ran past him.
The family members together ran into Caroline’s bedroom and locked the door. They realized that the
victim was not with them. Caroline heard an argument ensuing between the victim and the defendant on the other side of the closed door; Jessica and Daniel heard the victim scream. They all then emerged from the bedroom. At that point, the victim’s bedroom was on fire, the defendant was trying to open the front door and his leg appeared to be on fire, and the victim, appearing to be on fire herself, was walking slowly toward the front door. The defendant left the house; Key chased him, but quickly abandoned the pursuit. Jessica eventually grabbed a sheet or quilt and wrapped it around her mother to put out the flames.
When police arrived, the house itself was on fire, and the victim was wrapped in blankets on the front porch. After speaking with the family, four police officers, in a police cruiser, searched for the defendant. They pulled over before arriving at the defendant’s nearby apartment to discuss their strategy and saw the defendant walking toward them, saying, “I’m here. I’m the one you’re looking for. I’m the one who started the fire.”
After the officers placed the defendant in handcuffs, Officer Kevin Ashworth conducted a patfrisk search, which revealed matches in the defendant’s pocket. The defendant stated, “That’s what I used to start the fire.” The officers told the defendant to stop talking and read him the Miranda rights. Realizing the defendant had bums on his face, hands, and legs, the officers called for an ambulance. As the defendant was being brought to the ambulance, another officer commented that the defendant smelled of gasoline, and the defendant again stated, “That’s what I used to start the fire.”
A substantially burned red plastic gasoline can was found in a bedroom at 11 Warner Street, and a black gasoline filler pipe or nozzle was found in the living room area. Liquid taken from the gasoline can tested positive for gasoline residue, as did the black plastic nozzle. During a subsequent search of the defendant’s nearby apartment, police found an empty, unbumed red plastic gasoline can in the front hall closet.
The victim died on January 29, 2007, as a result of the bum injuries she received on January 7.
Discussion.
1.
Merger.
The defendant argues that his conviction of felony-murder cannot stand because the predicate felony, armed home invasion, effectively merged into the killing of the victim — that is, he claims, the acts of personal violence against the victim that caused her death were the same acts that satisfied one of the elements of armed home invasion, and therefore there was no separate felony on which the felony-murder conviction could be based. The defendant did not raise this claim before or during the trial, but he presented it as one of the grounds in support of his motion for a new trial, arguing that his trial counsel was ineffective for failing to make the merger argument. We review the issue to determine whether there is a substantial likelihood of a miscarriage of justice. See
Commonwealth
v.
Bly,
444 Mass. 640, 648 (2005) (when unpreserved error offered as ground for new trial based on ineffective assistance of counsel in case of murder in first degree, court applies substantial likelihood of miscarriage of justice standard of review).
“[I]n felony-murder the conduct which constitutes the felony must be separate from the acts of personal violence which constitute a necessary part of the homicide itself.”
Commonwealth
v.
Gunter,
427 Mass. 259, 272 (1998), quoting
Commonwealth
v.
Quigley,
391 Mass. 461, 466 (1984), cert. denied, 471 U.S. 1115 (1985) (quotations and citation omitted). Accord
Commonwealth
v.
Pagan,
440 Mass. 84, 92 n.8 (2003). The predicate felony of armed home invasion has four separate elements. In particular,
“the Commonwealth must show that the defendant (1) ‘knowingly enter [ed] the dwelling place of another’; (2) ‘knowing or having reason to know that one or more persons are present within’ (or entered without such knowledge but then remained in the dwelling place after acquiring or having reason to acquire such knowledge); (3) ‘while armed with a dangerous weapon’; and (4) ‘use[d] force or threaten [ed] the imminent use of force upon any person within such dwelling place whether or not injury occur [red], or intentionally cause[d] any injury to any person within such dwelling place.’ ”
Commonwealth
v.
Doucette,
430 Mass. 461, 465-466 (1999), quoting G. L. c. 265, § 18C. The issue of merger presented here by the defendant arises in connection with the fourth element; the question is whether there was evidence presented that the defendant used force, threatened the imminent use of force, or intentionally injured someone in the apartment, independent of the burning of the victim that ultimately caused her death. “Whether a particular felony is sufficiently independent from a killing to support a felony-murder conviction is a question that defies categorical analysis; we therefore review claims of merger on a ‘case-by-case basis with reference to specific facts.’ ”
Commonwealth
v.
Kilburn,
438 Mass. 356, 359 (2003), quoting
Commonwealth
v.
Gunter, supra
at 275 n. 15.
In this case, there was no evidence that the defendant actually used force against the victim distinct from the force the jury could find that he used (igniting the fire) that led to her death. Nor was there evidence suggesting that the defendant used actual force against, or intentionally caused injury to, anyone other than the victim. It is necessary, therefore, to determine
whether there was evidence of his threatened imminent use of force against anyone in the apartment. See
Commonwealth
v.
Pagan, supra.
Cf.
Commonwealth
v.
Kilburn, supra
at 362 (no merger between homicide and predicate felony of armed assault in dwelling, G. L. c. 265, § 18A, where there was “unequivocal and uncontested” evidence of earlier assault on homicide victim that was separate from gunshot causing victim’s death);
Commonwealth
v.
Gunter, supra
at 273-274 (no merger of homicide and predicate felony of armed assault in dwelling where ample evidence presented of separate assaults against other persons in dwelling in addition to homicide victim). On this issue, the disposition of the charges alleging separate assaults against individuals present in the Warner Street apartment at the time of the fire is relevant. As previously stated, the prosecutor announced at the start of the trial that the Commonwealth would nol pros Counts 4 and 5, respectively charging the defendant with assault of the victim and Tiffany with a knife, and accordingly did not pursue those counts; the trial judge entered a finding of not guilty on Count 6, which charged assault of Julissa with a hammer or knife; and the jury acquitted the defendant of Count 7, which charged assault of Key with gasoline. The Commonwealth argues, however, that independent of these specific alleged assaults, there was evidence of imminently threatened force in the form of assaults on all the apartment’s occupants as the defendant pursued the family members through the home.
We agree. Although it is not permissible to “infer a threat of force merely from the fact that the defendant was in the dwelling and was armed,”
Commonwealth
v.
Brown,
451 Mass. 200, 206 (2008), the evidence here — despite the confusing and somewhat conflicting testimony of the witnesses, see notes 8 and 9,
supra,
and the defendant’s denials, see note 11,
supra
— would permit the jury to find that (1) the defendant, having come crashing through the window, moved at a rapid pace toward the family, spraying liquid as he approached in a manner that reasonably could be characterized as threatening; and (2) the liquid being sprayed from the container was gasoline, thus making it a dangerous weapon.
Accordingly, we conclude that the
Commonwealth presented sufficient evidence that the defendant “threatened the imminent use of force” on the occupants of the apartment that could be found to be separate from his actions causing the death of the victim. Compare
Commonwealth
v.
Gunter,
427 Mass. at 274 (“ample evidence presented by the Commonwealth of independent assaults”).
This conclusion does not end the inquiry, however. See
Commonwealth
v.
Kilburn,
438 Mass. at 359-360. The judge’s instruction on felony-murder explained that for the jury to find the defendant guilty of this crime based on the predicate felony of armed home invasion, they were required to find that the Commonwealth had proved beyond a reasonable doubt that the killing occurred in the commission or attempted commission of the home invasion. However, the instruction did not explain that in order for armed home invasion to serve as the predicate felony, the jury must find the Commonwealth had proved that any use or threatened use of force or infliction of injury by the defendant — namely, the conduct constituting the fourth element of armed home invasion — was separate and distinct from the acts of the defendant that caused the victim’s death. See
id.
at 359;
Commonwealth
v.
Gunter, supra.
Rather, the judge simply tracked the language of G. L. c. 265, § 18C, and outlined that in order to find the fourth element of the crime proved, the jury must find proof of one of the three alternatives set out in the statute: that the defendant used force, or threatened the imminent use of force, or intentionally caused injury to a person in the dwelling house. We need not resolve whether there was a substantial likelihood of a miscarriage of justice as a result, however, because, as mentioned at the outset, we conclude under G. L. c. 278, § 33E, that reversal of the defendant’s conviction of felony-murder in the first degree is required for a separate reason.
See part 3,
infra.
However, on any retrial of the charge of felony-murder in the first degree, if armed home invasion again is advanced as the predicate felony, the jury must be instructed that they may not find the defendant guilty of felony-murder unless, with respect to armed home invasion, they find the Commonwealth has proved the fourth element of the crime, i.e., conduct of the defendant that was separate and distinct from the acts that caused the victim’s death.
2.
Other claims of ineffective assistance of counsel.
The defendant argues that trial counsel’s conduct both in preparation for trial and at trial deprived him of the effective assistance of counsel and that, as a result, his convictions of, inter alia, arson and armed home invasion must be reversed. Because these are non-capital offenses, we apply the standard of review for ineffective assistance of counsel claims set out in
Commonwealth
v.
Saferian,
366 Mass. 89, 96-97 (1974). See
Commonwealth
v.
Johnson,
435 Mass. 113, 123 (2001). “A defendant must demonstrate a ‘serious incompetency, inefficiency, or inattention of counsel — behavior of counsel falling measurably below that which might be expected from an ordinary fallible lawyer — and, if that is found, then, typically, whether it has likely deprived the defendant of an otherwise available, substantial ground of defence.’ In regard to the latter requirement, ‘there ought to be some showing that better work might have accomplished something material for the defense.’ ”
Id.,
quoting
Commonwealth
v.
Satterfield,
373 Mass. 109, 115 (1977).
a.
Juror voir dire.
“General Laws c. 234, § 28, provides that a trial judge must, for the purpose of determining whether a juror stands indifferent in a case, conduct an individual voir dire of each prospective juror if it appears that a substantial risk exists that an extraneous issue might affect the outcome of the case.”
Commonwealth
v.
Kater,
432 Mass. 404, 413 (2000). “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. ... A trial judge, who is aware of the facts of a
particular case and can observe firsthand the demeanor of each prospective juror, is in the best position to determine what questions are necessary reasonably to ensure that a particular jury can weigh and view the evidence impartially.”
Commonwealth
v.
Lao,
443 Mass. 770, 776-777 (2005),
S.C.,
450 Mass. 215 (2007) and
ante
12 (2011) (citations omitted).
On appeal, we will not disturb a trial judge’s decision “unless the complaining party demonstrates that there was a substantial risk that the case would be decided in whole or in part on the basis of extraneous issues.”
Commonwealth
v.
Sheline,
391 Mass. 279, 290-291 (1984).
During the jury selection process, two prospective jurors stated they could not be impartial because of the bandages on the defendant’s hands.
They were excused. At that time, both the prosecutor and defense counsel agreed there was no dispute that the defendant himself had been burned as a result of the fire occurring at the 11 Warner Street apartment. The defendant now argues, however, that in effect his bandaged hands presented an extraneous issue, that the jury’s ability to “gaze on the defendant’s bandages without ever having been screened for bias” during the remainder of jury selection and during the prosecution’s direct case solidified in the jurors the belief that the defendant had been burned because he deliberately started the fire, and that defense counsel was ineffective for not insisting on individual questioning of every prospective juror about the impact of his bandaged hands.
The argument fails. From very early in the trial it was clear that the defendant had been burned in the fire. In his opening statement, the prosecutor noted that occupants of the home had seen the defendant with “flames on his clothes”; Jessica testified that the defendant had “fire on his leg”; and police Officer Kevin
Ashworth confirmed that the defendant’s hands were burned. The defendant himself testified to his hands being “burnt beyond recognition”; defense counsel introduced photographs of those bums and referred to them in his closing argument. It is simply not logical to conclude that the jury would infer that the defendant started the fire from the undisputed fact that he himself was burned by the fire. Counsel was therefore not ineffective in failing to move for individual voir dire of the jury as to the defendant’s bandaged hands.
b.
Failure to prepare for trial.
The defendant argues that, despite being appointed nearly one year before trial, trial counsel did not begin any investigation until one month before trial when he first sought funds for a private investigator. Further, the defendant complains that trial counsel spent less than three hours interviewing the defendant, and that the private investigator never interviewed him. The defendant assigns further error to the investigator for not finding witnesses who could have corroborated the defendant’s version of events and, particularly, in not obtaining the defendant’s cellular telephone records for January 7, 2007. Finally, the defendant wanted defense counsel to investigate a particular incident allegedly occurring in April of 2006 in New York and involving the victim and one of her sons — an incident that, according to the defendant, would have given credibility to the defendant’s argument that the victim was in fact capable of acting violently against him in order to protect her family.
In denying the defendant’s motion for a new trial, the judge found that, given the silence of trial counsel’s affidavit on these matters — and in particular on the question whether the defendant had ever mentioned to his counsel his cellular telephone records or the alleged earlier incident in New York — all that was presented was the defendant’s own, self-serving affidavit.
The judge then concluded that “better work would not have produced something material for the defense.” See
Commonwealth
v.
Saferian,
366 Mass. at 96. As the judge himself noted, he was not required to, and implicitly did not, credit the
defendant’s affidavit. See
Commonwealth
v.
Goodreau,
442 Mass. 341, 351 (2004). We accept a motion judge’s determination of the credibility of an affidavit on a motion for a new trial,
Commonwealth
v.
Ridge,
455 Mass. 307, 325 (2009), especially where, as here, the judge also presided at trial. See
Commonwealth
v.
Thomas,
399 Mass. 165, 167 (1987). We find no error in the judge’s conclusion that trial counsel’s failure to investigate did not amount to ineffective assistance of counsel in this case.
3.
Review under G. L. c. 278, § 33E.
As discussed, the defendant was convicted of felony-murder in the first degree based on armed home invasion. He also was convicted of arson, which may serve as the predicate felony for felony-murder in the second degree.
Commonwealth
v.
Martinez,
393 Mass. 612, 616 n.1 (1985).
Commonwealth
v.
Rhoades,
379 Mass. 810, 817, 823 (1980). However, no instruction on felony-murder in the second degree was requested by the defense or otherwise given by the judge. Although neither party raised this issue on appeal (see note 2,
supra,
and accompanying text), in accordance with our obligation to review the entire case under G. L. c. 278, § 33E, we nonetheless consider whether the failure to give an instruction on felony-murder in the second degree with arson as the predicate felony, which could have given rise to a conviction of a lesser degree of murder, created a substantial likelihood of a miscarriage of justice. Cf.
Commonwealth
v.
Martinez, supra
(defendant, charged with murder of occupants of tenement house she allegedly set on fire, held entitled to new trial on murder convictions because of error in jury instructions; court observed in closing that at retrial “consideration should be paid” to “the possibility of instructing the jury as to arson-felony murder, which would be murder in the second degree . ... No instruction on [this] point was requested or given” [citations omitted]).
Instructions on felonies that could give rise to a conviction of a lesser degree of felony-murder are properly conceptualized as instructions involving degrees of murder. See
Commonwealth
v.
Christian,
430 Mass. 552, 557 (2000).
“An instruction on felony-murder in the second degree is required . . . when there
is a rational basis in the evidence to warrant the instruction.”
Id.
at 558. See
Commonwealth
v. Paulding, 438 Mass. 1, 10 n.4 (2002) (“Of course, if the evidence supports a verdict of felony-murder in the second degree within the charge of felony-murder in the first degree, that form of murder in the second degree would have to be explained to the jury”).
“A conviction of felony-murder in the second degree requires the jury to find that (1) the defendant committed or attempted to commit a felony with a maximum sentence of less than imprisonment for life, (2) a killing occurred during the commission or attempted commission of that felony, and (3) the felony was inherently dangerous or the defendant acted with conscious disregard for the risk to human life.”
Commonwealth
v.
Christian, supra
at 558. In this case, there can be no question that the evidence supported a verdict of felony-murder in the second degree premised on arson.
The jury concluded on clearly adequate evidence that the defendant was guilty of arson. In particular, the evidence was more than sufficient for the jury to have found that the defendant sprayed or poured gasoline inside the apartment at 11 Warner Street and lit that gasoline on fire with the matches he later surrendered to police. See
Commonwealth
v.
Rhoades,
379 Mass. at 817 (“the chain of circumstances permitted the jury to infer that the defendant ‘wilfully and maliciously’ set the fire”). Moreover, the victim died as a result of the bums she received in that fire ■— a fact to which the defendant and the Commonwealth actually stipulated at trial. Finally, this court has long recognized arson as an inherently dangerous felony. See
Commonwealth
v.
Matchett,
386 Mass. 492, 505 n.15 (1982). There was in this case, therefore, a rational and indeed quite compelling evidentiary basis for an instruction on felony-murder in the second degree.
In
Commonwealth
v.
Rego,
360 Mass. 385 (1971), the defendants were convicted of murder in the first degree based on the predicate felony of robbery, and were also convicted of breaking and entering in the nighttime.
Id.
at 386, 390. No jury instruction explaining that the crime of breaking and entering could result in a verdict of guilty of felony-murder in the second degree was given, although the jury were instructed on murder in the second degree based on malice.
Id.
at 394-395. Given that there was significant evidence warranting a determination the defendants were actually engaged in breaking and entering when the victim was killed, this court remanded the case to the Superior Court for entry of verdicts of guilty of murder in the second degree.
Id.
at 395-397.
See
Commonwealth
v.
White,
353 Mass. 409, 424-426 (1967), cert. denied, 391 U.S. 968 (1968) (failure to instruct jury on felony-murder in second degree based on breaking and entering where defendant convicted of felony-murder in first degree based on robbery created “possible miscarriage of justice”; court remanded for entry of verdict of guilty of murder in second degree). In the circumstances of this case, we conclude that a substantial likelihood of a miscarriage of justice resulted from the fact that the jury were not provided with the opportunity to consider a verdict of felony-murder in the second degree based on arson; the fact that the defendant did not request such an instruction is not dispositive.
The defendant’s conviction of felony-murder in the first degree must be reversed.
On remand, the Commonwealth may retry the defendant on the indictment charging him with murder in the first degree, and may proceed on all three theories that were put before the jury
at the defendant’s first trial.
See
Commonwealth
v.
Carlino,
449 Mass. 71, 76-80 (2007). See also
Commonwealth
v.
Zanetti,
454 Mass. 449, 460-461 (2009). Alternatively, the Commonwealth may choose to agree to entry of a verdict of felony-murder in the second degree.
Cf.
Commonwealth
v.
Burton,
450 Mass. 55, 56 n.1 (2007).
Conclusion.
This case is remanded to the Superior Court for further proceedings consistent with this opinion.
So ordered.