Commonwealth v. Moffat, 486 Mass. 193

Background

In May 1999 Malcolm Howard was shot to death after driving a Toyota with Shane Moffat; Howard’s body was found on an embankment and the Toyota and blood evidence were recovered nearby.
Physical evidence tied Moffat to the scene: the victim’s blood on Moffat’s boot, Moffat’s mail found in the Toyota, recovery of a shotgun barrel consistent with the murder weapon, and Moffat’s use of the victim’s cell phone after the killing.
Moffat gave multiple inconsistent statements to police, ultimately admitting presence at the killing and to disposing of a shotgun but denying he fired the shot, blaming two men called “Ayah” and “Quentin.”
A redacted FBI report provided before trial referenced a man called “Screw” who allegedly told a third party he had witnessed Moffat commit the murder; Moffat’s defense theory at trial implicated Ayah and Quentin, not Screw.
A jury convicted Moffat of first‑degree murder in 2001; he raised multiple postconviction claims over years, including Brady/false‑theory, improper lay testimony, prosecutorial misconduct in closing, defective jury instructions on circumstantial evidence, ineffective assistance for failure to investigate third‑party leads, and sought posttrial discovery; the trial and motion judges denied relief.
The Supreme Judicial Court affirmed the conviction, rejecting each claim and concluding postconviction discovery was properly denied and §33E relief was unwarranted.

Issues

Issue	Commonwealth's Argument	Moffat's Argument	Held
1) Failure to investigate / false trial theory (FBI report re: “Screw”)	Commonwealth disclosed the FBI report to defense and had no duty to further investigate or present every piece of exculpatory evidence.	Prosecutor should have investigated alleged third‑party perpetrator and presenting a theory it knew or should have known was false violated due process.	Disclosure satisfied prosecutor's duty; no Brady violation for not presenting omitted evidence and no evidence the Commonwealth knowingly presented false testimony.
2) Lay witness testimony (personal knowledge and culpability statements)	Witnesses’ statements were contextual and did not purport to have direct knowledge of the killing; any improper opinion was harmless.	Testimony that defendant was the last with victim and a witness calling him “the guy who killed my cousin” invaded jury's role and lacked personal knowledge.	Statements were contextual or nonresponsive and defense chose strategy; one opinion statement was inadmissible but harmless given other strong evidence.
3) Prosecutor's closing (demeanor -> inference of guilt)	Comment on witness credibility and demeanor was proper; argument did not meaningfully prejudice jury.	Prosecutor improperly urged jury to infer guilt from Moffat’s courtroom demeanor and lack of remorse.	Remarks were improper in part but limited, comprised a tiny portion of argument, and were not substantially likely to produce miscarriage of justice.
4) Jury instructions (circumstantial evidence / inferences)	Jury was properly instructed on direct vs. circumstantial evidence, inferences, and burden of proof; no fixed wording is required.	Omitted specific language about ‘‘moral certainty’’ and excluding reasonable alternative explanations, lowering burden.	Instructions, read as a whole, correctly stated the law and did not lower the Commonwealth’s burden.
5) Ineffective assistance (failure to investigate FBI report / brother)	Defense investigator followed up; counsel pursued a coherent third‑party theory at trial; no reasonable probability further investigation would have helped.	Counsel did not reasonably investigate Screw/Wolfe leads or elicit brother’s potentially exculpatory knowledge.	No ineffective assistance: counsel investigated, pursued the defense theory, and defendant failed to show prejudice.
6) Posttrial discovery denials	Documents sought were unlikely to yield materially exculpatory evidence; requests were speculative and largely hearsay.	Federal files (FBI, warrant affidavit, attorney notes) likely contained exculpatory material that would support a new trial.	Motion judges did not abuse discretion: defendant failed to make a prima facie showing that discovery would likely produce evidence warranting a new trial.

Key Cases Cited

Commonwealth v. Tavares, 484 Mass. 650 (2020) (standard for reciting evidence in light most favorable to the Commonwealth)
Commonwealth v. Wright, 479 Mass. 124 (2018) (prosecution must disclose exculpatory evidence but is not obligated to gather evidence favoring defense)
Commonwealth v. Lapage, 435 Mass. 480 (2001) (prosecutor's obligations regarding investigation and disclosure)
Commonwealth v. Earl, 362 Mass. 11 (1972) (relief when prosecution deliberately presents a false factual picture)
Commonwealth v. Ayala, 481 Mass. 46 (2018) (scope of prosecutor's duty to disclose and defendant's burden to show access to federal materials)
Commonwealth v. Jewett, 442 Mass. 356 (2004) (prosecutor not required to try defendant's case for him using cryptic defense documents)
Commonwealth v. Perez, 460 Mass. 683 (2011) (impropriety of lay witness opining on defendant's culpability and harmless‑error analysis)
Commonwealth v. Silva, 482 Mass. 275 (2019) (review of circumstantial‑evidence instructions and whether they lower burden of proof)
Commonwealth v. Camacho, 472 Mass. 587 (2015) (standard for postconviction discovery: prima facie showing that discovery will likely lead to evidence warranting new trial)
Commonwealth v. Gulla, 476 Mass. 743 (2017) (standard for reviewing ineffective assistance claims in first‑degree murder cases)