SJC Affirms Denial of Plea Withdrawal Despite Police Corruption in Related Case: Commonwealth v. Hood (SJC-13818, August 31, 2026)

Craig Hood pleaded guilty in 1995 to murdering Tracy Brown and Celine Kirk in Mattapan. He confessed to shooting both women, telling police he killed Kirk over a gold chain and then killed Brown to eliminate a witness. Twenty-five years later, after evidence of egregious police corruption emerged in a related investigation, Hood tried to take back his plea. The Supreme Judicial Court affirmed the denial of his motion.

The case turned on whether misconduct proven in the murder case of Boston police Detective John Mulligan infected Hood’s separate prosecution. The same detectives investigated both killings. Hood argued that because corruption poisoned the Mulligan probe, it necessarily tainted his case as well. The court disagreed, holding that Hood failed to establish the required nexus between the proven misconduct and his own investigation.

The Facts

On September 29, 1993, Boston police found Brown and Kirk dead in their Mattapan apartment. Brown’s two-year-old son had called 911. Brown suffered one gunshot to the head and one to her arm. Kirk had two gunshot wounds to her head.

Police interviewed Nikki Coleman, a friend of Kirk. Coleman told detectives she had spoken with Kirk by phone on the afternoon of the murders. Coleman heard Hood arguing with Kirk in the background about a gold chain Hood had loaned to Kirk. Coleman knew Hood and identified him from a photograph.

Police discovered outstanding warrants for Hood, including one for shooting Glenn McLaughlin in the leg with a .25 caliber handgun earlier that year. Ballistics testing showed that the same gun fired both the bullet recovered from McLaughlin and the bullets removed from Brown and Kirk.

After his arrest, Hood asked to speak with Detectives Daniel Keeler and Sergeant Detective William Mahoney. He gave a detailed confession. Hood told police he shot Kirk in the head when she refused to return the gold chain and tried to escort him out. Brown fled to a bedroom. Hood followed and shot her twice. He returned and shot Kirk again before Brown’s young son pushed him out. Hood explained he killed Brown because she was a witness. He described the crime scene and his clothing in detail. Police recovered a green jacket with blood on it from Hood’s girlfriend’s home.

A grand jury indicted Hood on two counts of first-degree murder and related firearms charges. In June 1995, represented by counsel, Hood pleaded guilty to two counts of second-degree murder. He received two consecutive life sentences with the possibility of parole after thirty years, avoiding mandatory life without parole.

The Mulligan Investigation

Three days before the Mattapan murders, Detective John Mulligan was shot dead in his police vehicle outside a Walgreens in Roslindale. The Mulligan investigation intersected with Hood’s case because Sean Ellis, who lived with Kirk and Brown (his cousins), placed himself at the Walgreens around the time of Mulligan’s death. Ellis was convicted of Mulligan’s murder.

Years later, Ellis successfully moved for a new trial based on newly discovered evidence showing that Mulligan himself participated in police corruption with detectives who investigated his murder. That gave those detectives a powerful incentive to prevent a comprehensive investigation that might expose their own crimes. The Supreme Judicial Court affirmed the grant of Ellis’s new trial in 2016.

Hood’s plea counsel had sought discovery from the Mulligan investigation to support a third-party culprit defense: that whoever killed Mulligan also killed Kirk to silence her. A judge ordered the material produced under a protective order barring plea counsel from discussing it with Hood or anyone else. Hood received the discovery in April 1995, more than a month before pleading guilty.

The Motion to Withdraw

In July 2020, Hood moved to vacate his guilty pleas. He argued the Commonwealth withheld exculpatory evidence from the Mulligan investigation, newly discovered evidence cast doubt on his guilt, his plea counsel was ineffective for failing to challenge the protective order, and his pleas were involuntary.

The motion judge held an evidentiary hearing and credited testimony that Hood received extensive discovery, including most of the documents he claimed were withheld. The judge assumed certain materials had not been produced (FBI reports about Ellis admitting involvement in Mulligan’s murder, statements that Ellis had access to a .25 caliber handgun, interviews with a Walgreens witness, and various hotline tips) and considered whether their absence mattered.

What the Court Held

The Supreme Judicial Court affirmed the denial of Hood’s motion across the board. Writing for the unanimous court, Justice Georges held that Hood failed to prove the withheld or later-discovered information would have materially influenced his decision to plead guilty, and that rejecting the plea would not have been rational.

On the police misconduct claim, the court held that Hood failed to establish the required nexus between proven corruption in the Mulligan investigation and his own case. Corruption in one investigation does not automatically infect another merely because they intersected, even when some of the same officers worked both files.

The court also rejected Hood’s challenge to his confession, finding no evidence of specific coercive tactics and noting that the confession’s detailed, corroborated content supported its reliability.

The Reasoning

The court applied settled standards: a defendant seeking to withdraw a guilty plea based on withheld evidence, newly discovered evidence, or ineffective assistance must show a reasonable probability he would not have pleaded guilty with the information, and that rejecting the plea would have been rational. For egregious government misconduct, a defendant must show misconduct in his own case that was material to the plea decision.

The Mulligan investigation material failed these tests. The FBI reports and witness statements bore on who killed Mulligan, not who killed Kirk and Brown three days later. The evidence that Ellis had access to a .25 caliber handgun was insufficient, as common caliber alone does not support a third-party culprit defense. The hotline tip about a boyfriend was too speculative.

Much of the material was cumulative. Plea counsel already knew Kirk’s alleged connection to Ellis and Ellis’s alleged connection to Mulligan’s murder. Counsel already had a witness statement describing a man in a green jacket leaving the apartment and another implicating a boyfriend.

The Commonwealth’s case was strong. Coleman placed Hood at the apartment arguing with Kirk on the day of the murders. A neighbor saw a man in a green jacket (which Hood admitted wearing) leaving the apartment. Ballistics tied the murder weapon to Hood’s shooting of McLaughlin. Most significantly, Hood gave a detailed, corroborated confession describing facts only the killer would know.

Against that evidence, and facing mandatory life without parole on the first-degree murder charges, accepting a plea that made him eligible for parole was rational. Hood identified no substantial defense that would have changed that calculus.

On the misconduct claim, the court distinguished Ellis’s case. There, Mulligan’s participation in the same criminal scheme the investigating detectives sought to conceal gave them specific incentive to short-circuit the investigation. No comparable evidence existed here. Brown and Kirk were not involved in police corruption. The investigations crossed, but crossing alone does not establish a nexus. Hood’s speculation that exculpatory evidence could have been overlooked was insufficient.

The court rejected Hood’s request for a conclusive presumption of misconduct. Such presumptions, established as a remedy in cases involving the State police drug lab scandal, apply when it would be impossible for defendants to show the required nexus. Hood made no such showing.

Why It Matters

The decision clarifies the boundaries of relief available when police corruption emerges after a guilty plea. Even serious, proven misconduct in a related investigation does not automatically taint a defendant’s separate case. Courts require a concrete link between the misconduct and the defendant’s own prosecution.

The ruling also reinforces strict standards for withdrawing guilty pleas. A defendant must show more than that undisclosed information might have been useful. The information must have materially affected the plea decision in light of the full record, including the strength of the Commonwealth’s case and the benefit the defendant received from pleading guilty.

For defendants whose cases intersected with compromised investigations, the path to relief remains narrow. Shared witnesses, overlapping timelines, and common investigators do not suffice. The corruption must have infected the specific investigation, not merely occurred in a related matter.

The decision leaves open when, if ever, corruption might be so pervasive that it warrants presuming taint across multiple investigations. That question awaits a different case.

Read the full opinion: Commonwealth v. Hood (SJC-13818, August 31, 2026).