The New Hampshire Supreme Court has vacated the second-degree murder conviction of Adam Montgomery, who was found guilty in 2024 for the death of his 5-year-old daughter, Harmony Montgomery. The state’s highest court ordered a new trial, determining that the way charges were presented during the initial proceedings may have compromised the jury's ability to render an independent verdict on the murder allegation. The ruling, issued recently, does not result in Montgomery's immediate release, as he remains incarcerated on separate convictions for assault, falsifying physical evidence, and witness tampering. Prosecutors have indicated their intent to retry him on the murder charge.
"We remain confident in the facts of this case, the evidence presented, and the exceptional work of our prosecutors, investigators, and law enforcement partners." — Spokesperson, New Hampshire Attorney General’s Office.
Adam Montgomery was sentenced to 56 years to life in prison following his 2024 conviction, which included charges related to the death of his daughter. The central issue identified by the New Hampshire Supreme Court was the "joinder of charges" at trial, a legal term referring to the practice of combining multiple charges or defendants into a single trial. Justices found that presenting the allegations of assault and murder together created a significant risk of blurring two distinct sets of conduct. This overlap, according to the court's opinion, potentially exposed jurors to extensive evidence tied to an earlier incident in July 2019, which may have improperly influenced their assessment of the homicide charge related to December 2019.
The court's decision highlighted a critical distinction between the two time periods central to the prosecution's case. The July 2019 allegations, which involved severe physical harm to Harmony, were supported by multiple witnesses who described visible injuries on the child and reported statements attributed to Montgomery. In contrast, the December 2019 incident, when Harmony is believed to have died, relied on a narrower evidentiary record with less independent corroboration. The court expressed concern that the sheer volume and nature of the evidence presented for the earlier assault could have created a prejudicial effect, leading jurors to conflate the two events and potentially convict on the murder charge based on evidence not directly pertinent to it.
A significant portion of the prosecution’s case against Montgomery centered on the testimony of his then-wife, Kayla Montgomery. She testified under a cooperation agreement, detailing events that transpired after Harmony’s disappearance and death. Her accounts included descriptions of moving the child’s remains between various locations, such as a shelter ventilation space and a workplace freezer, and discussions about how to dispose of the body. However, the Supreme Court noted that Kayla Montgomery's testimony primarily addressed actions taken *after* the alleged killing, rather than independently establishing how or when the fatal injuries occurred. This distinction was crucial in the court's assessment of the murder conviction's integrity.
Prosecutors had alleged that Harmony died in December 2019 after her father struck her inside a vehicle because she had soiled herself while sleeping. According to trial testimony, Montgomery allegedly told his then-wife, "I think I really hurt her this time." Harmony was never seen alive again after this alleged incident. Although she was last seen in late 2019, she was not officially reported missing until 2021, and her remains have never been found. Investigators worked for years to piece together the events leading to her disappearance and presumed death, drawing national attention to the case.
The court also reviewed testimony from a friend of Montgomery’s who stated he observed Montgomery in an agitated state months after Harmony’s disappearance and heard statements that prosecutors argued reflected consciousness of guilt. However, the court concluded that this evidence, like Kayla Montgomery's testimony, did not directly establish the precise circumstances of how or when the fatal injuries occurred.
Montgomery’s defense team argued that combining the assault and murder charges created an unfair prejudice against their client. They contended that jurors were exposed to extensive evidence of earlier alleged abuse, which could have unfairly shaped their perception and judgment regarding the homicide allegation. The New Hampshire Supreme Court concurred with this argument, concluding that the joinder of charges ultimately compromised Montgomery's constitutional right to a fair trial.
Despite overturning the murder conviction, the court upheld Montgomery's convictions for second-degree assault, falsifying physical evidence, and witness tampering. He continues to serve a lengthy prison sentence based on these remaining charges. The case will now be sent back to a lower court, where the New Hampshire Attorney General’s Office has affirmed its intention to pursue a retrial on the murder charge. A spokesperson for the Attorney General's Office stated, "We remain confident in the facts of this case, the evidence presented, and the exceptional work of our prosecutors, investigators, and law enforcement partners." The office reiterated its commitment to seeking justice for Harmony Montgomery as the legal process continues.
