By Joshua Wood
A prosecutor’s failure to disclose favorable evidence can support a motion for a new trial. But identifying the missing evidence is only part of the analysis. The defendant must also establish the prejudice required for relief.
In Commonwealth v. Holbrook, SJC-13776, decided October 9, 2026, the Massachusetts Supreme Judicial Court considered undisclosed emails and a defense lawyer’s inadequate investigation of computer evidence. The court found serious shortcomings, but it affirmed the denial of the defendant’s amended second motion for a new trial.
The distinction is important. Evidence can be exculpatory without requiring a conviction to be overturned. Counsel’s investigation can be deficient without establishing a successful claim for a new trial. In each instance, the court must examine how the failure affected the defense in the context of the evidence presented at trial.
The murder case and the disputed computer evidence
Richard Holbrook, Jr., was convicted of first-degree murder and related offenses arising from a killing in November 2006.
The Commonwealth’s case included witnesses placing Holbrook with the victim shortly before the killing and linking him to the victim’s vehicles afterward. Surveillance footage showed a man the jury could identify as Holbrook driving the victim’s truck and exchanging coins for cash. Police later found the victim’s empty coin container in the abandoned truck.
The defense challenged Holbrook’s identification as the killer and suggested that another man, Sean Meagher, was responsible. Meagher had previously lived with the victim. He denied that their relationship had been romantic, although he acknowledged that they had shared a bed.
Police recovered the victim’s computer and webcam from a bathtub, where they had been submerged. During earlier postconviction proceedings, a defense expert recovered emails from the computer that supported the defense’s effort to challenge Meagher’s account of his relationship with the victim.
Those emails had not been disclosed before trial.
Exculpatory evidence includes evidence that challenges credibility
Exculpatory evidence is not limited to evidence that conclusively establishes innocence. Evidence useful in challenging a witness’s credibility can also qualify.
In Holbrook’s earlier appeal, the SJC had already determined that the undisclosed emails from the victim to Meagher were exculpatory. The 2026 decision did not retreat from that conclusion.
The emails could have been used to challenge Meagher’s denial of a romantic relationship. That gave them potential value to the defense.
The separate question was whether their absence prejudiced Holbrook sufficiently to require a new trial. The court examined the particular testimony the emails could challenge, the evidence already available for that purpose, and the strength of the Commonwealth’s case.
The obligation to disclose favorable evidence and the defendant’s entitlement to a new trial are distinct questions.
What a defendant must establish after nondisclosure
The SJC identified three requirements for obtaining a new trial based on undisclosed exculpatory evidence:
The evidence was within the possession, custody, or control of the prosecutor or someone subject to the prosecutor’s control.
The evidence was exculpatory.
The nondisclosure caused the prejudice required for relief.
In Holbrook, the first two requirements were established. The computer containing the emails was within the prosecution’s possession and control, and the emails had already been found exculpatory.
Trial counsel had also specifically requested information from the computer. The court therefore examined whether Holbrook had demonstrated a substantial basis for claiming prejudice from the nondisclosure.
The court concluded that he had not.
Why the emails did not require a new trial
The emails could undermine Meagher’s description of his relationship with the victim. They did not place Meagher at the murder scene or contradict his account of where he was when the killing occurred.
The messages from the victim to Meagher were also more than a year old. They did not show that Meagher harbored hostility toward the victim, intended to kill him, or had a motive for the murder.
The defense had already challenged Meagher’s account of the relationship by eliciting his admission that he and the victim shared a bed during the two years they lived together. The court concluded that additional impeachment on that subject would not necessarily lead the jury to reject his alibi.
The court also considered the eyewitness testimony and surveillance evidence connecting Holbrook to the victim’s apartment and truck within a narrow period surrounding the killing.
The distinction was between showing that a witness had been untruthful about a private relationship and showing that his account of his whereabouts was unreliable. The court concluded that the emails did not sufficiently support that second inference or weaken the evidence identifying Holbrook.
The court found the computer investigation deficient
The SJC was critical of trial counsel’s preparation concerning the computer.
Counsel obtained funds and retained a computer expert. But the expert was not provided with a forensic image of the hard drive, did not produce a report, and did not testify. Counsel also failed to pursue a discovery motion specifically seeking the computer analysis, emails, and Internet searches.
The court agreed that this investigation fell below the level expected of an ordinary competent lawyer. Under the circumstances, reasonable preparation required an independent investigation using an expert and, as necessary, further inquiry of the Commonwealth and its computer specialists.
Retaining an expert did not substitute for having the expert examine the evidence.
The court nevertheless concluded that the deficient investigation did not justify a new trial. Applying the review available under G. L. c. 278, § 33E, in this first-degree murder appeal, it considered whether counsel’s error was likely to have influenced the jury’s conclusion.
The recovered emails did not establish that likelihood. Nor did speculation that further investigation might have uncovered something more useful.
A failure to investigate is different from a reasonable strategic choice
The court did not treat every step counsel omitted as deficient representation.
Holbrook argued that counsel should have obtained DNA, fingerprint, and palm-print samples from Meagher for comparison with evidence from the investigation. The court accepted that declining those tests could be a reasonable strategic decision in this case.
Meagher had lived in the victim’s home. Finding his forensic traces there could have had an innocent explanation and limited value to the defense. Testing also risked excluding him as the source of unidentified evidence, weakening the alternative-suspect theory.
The court similarly rejected claims concerning counsel’s failure to call certain witnesses. It considered whether their testimony would add significant evidence, whether it was reliable, and what risks cross-examination would create.
The analysis was specific to the record. It did not excuse inadequate investigation generally. It distinguished the failure to examine important computer evidence from decisions the court found reasonably supported by the circumstances.
The claim that police failed to investigate another suspect
Holbrook also argued that counsel should have pursued a defense based on deficiencies in the police investigation, commonly called a Bowden defense.
Such a defense can draw attention to investigative omissions that undermine the reliability or completeness of the prosecution’s case.
Here, however, the jury heard that police had considered Meagher as a suspect, interviewed him and his girlfriend, and checked his alibi. The court also considered the substantial evidence pointing toward Holbrook.
A challenge to the investigation would have permitted the Commonwealth to explain why police pursued Holbrook and did not investigate Meagher further. The court concluded that Holbrook had not shown that pursuing this additional defense would have materially improved his position.
The practical importance of examining digital evidence early
The history of the computer evidence illustrates why timely review and preservation are important.
Some emails were recovered during earlier postconviction proceedings. But when additional discovery was pursued after the SJC’s 2019 remand, the original hard drive could not be located, the forensic copy had been damaged, and the email providers reported that no records existed. That later discovery produced no additional exculpatory evidence.
The court would not assume that unavailable material would have supported the defense.
For a postconviction claim, counsel must identify as specifically as possible what an omitted investigation would have produced and how that evidence could have affected the case. A general assertion that more investigation might have helped is insufficient.
Q and A
Does undisclosed exculpatory evidence automatically require a new trial?
No. The defendant must also establish the prejudice required under the applicable legal standard. In Holbrook, the emails were exculpatory, but the court concluded that their nondisclosure did not justify a new trial.
Can evidence be exculpatory if it only challenges a witness’s credibility?
Yes. Evidence that impeaches a witness can be exculpatory. Its significance to a request for a new trial depends on the testimony it undermines and its relationship to the rest of the evidence.
Is an inadequate investigation enough to establish ineffective assistance of counsel?
Not by itself. A defendant must connect the deficiency to the prejudice required for relief. The SJC found Holbrook’s computer investigation deficient but concluded that he had not shown the effect on the jury’s decision necessary for a new trial.
Must a defense lawyer request every possible forensic test?
No. The reasonableness of testing depends on the circumstances, including its potential benefit and the risk that it will weaken the defense. In Holbrook, the court accepted the decision not to seek certain samples from the proposed alternative suspect while criticizing counsel’s failure to investigate the computer.
Does evidence that a witness lied establish that the witness committed the crime?
No. The nature of the falsehood and its connection to the crime are important. The emails in Holbrook challenged the witness’s account of a relationship, but the court concluded that they did not establish a motive to kill or undermine his alibi.
Did the SJC grant Holbrook a new trial?
No. The 2026 decision affirmed the denial of his amended second motion for a new trial. The opinion also transferred a separate third motion to the Superior Court for a decision; it did not resolve that motion.
Conclusion
Commonwealth v. Holbrook demonstrates the need to connect a failure in disclosure or investigation to a concrete consequence for the defense. Establishing that evidence was withheld or that counsel performed inadequately begins the inquiry. A motion for a new trial must also explain, with support from the record, how that failure could have affected the result.
Serious shortcomings deserve careful examination. They should neither be dismissed as harmless without analysis nor presented as an automatic basis for overturning a conviction.
If you or a family member has been convicted of a crime in Massachusetts and believes favorable evidence was not disclosed or an important defense was not investigated, call Benzaken, Sheehan & Wood, LLP. We can examine the record, assess the available evidence, and explain whether there are grounds to seek a new trial. Call us today to discuss your case and the steps available to challenge the conviction.