State of New Hampshire v. Adam Montgomery
- Date Filed: 05/08/2024 Amendment to Order on Media Rules
- Date Filed: 05/08/2024 Statement of No Change of Financial Status
- Date Filed: 05/07/2024 State’s Sentencing Memorandum
- Date Filed: 05/07/2024 Sentence Sheet – Witness Tampering form 115C
- Date Filed: 05/07/2024 Sentence Sheet – 2nd Murder Sentencing Form 112c
- Date Filed: 05/07/2024 Sentence Sheet – Abuse of Corpse sentencing
- Date Filed: 05/07/2024 Sentence Sheet – Falsifying Physical Evidence sentencing form 113c
- Date Filed: 05/03/2024 Court Order on Media Rules for Sentencing Hearing
- Date Filed: 04/19/2024 Order Re: Defendant’s Appearance at Sentencing Pursuant to RSA 651:4-a
- Date Filed: 03/28/2024 RESPONSE TO STATE’S NOTICE FOR DEFENDANT’S APPEARANCE AT SENTENCING
- Date Filed: 03/20/2024 STATE’S NOTICE FOR DEFENDANT’S APPEARANCE AT SENTENCING
- Date Filed: 03/12/2024 REQUEST FOR DOCUMENTS IN CRIMINAL CASES
- Date Filed: 02/15/2024 Arrest Warrant
- Date Filed: 01/20/2023 Indictment
- Date Filed: 01/20/2023 Indictment
Harmony Montgomery Source Sections
Harmony Montgomery
Age Now: 9 Years Old Female
Harmony Renee Montgomery was independent as a toddler and a very young child. She liked books, playing with dolls, and playing with her peers. She is described as both “charming” and “very active.” Harmony had well-developed language skills and was known for being very empathetic. Also, as a toddler, she loved to eat! She loved all types of foods, including fruits, vegetables, and even onions. As a young child, she had the opportunity to play in a vegetable garden and would pick the cherry tomatoes and cucumbers.
Harmony Renee Montgomery was a young child from New Hampshire whose disappearance exposed years of child-protection failures, unanswered reports of abuse, and a long delay before authorities realized she had been killed.
Harmony was born on June 7, 2014. She was only 5 years old when prosecutors say she was murdered by her father, Adam Montgomery, in December 2019. Her remains have never been found.
Harmony’s case did not become public until late 2021, when her mother, Crystal Sorey, reported that she had not seen or spoken to her daughter in years. By then, Harmony had been missing for roughly two years. Police later determined that Harmony had not simply disappeared. Investigators said she had been murdered in 2019, and that her body had been hidden and moved for months before being disposed of in an unknown location.
Harmony Renee Montgomery went missing from Manchester, New Hampshire, in 2019. She was not reported missing until 2021, nearly two years after she was last seen alive.Harmony Montgomery Case File
Background
Harmony spent part of her early life in the care of her mother, Crystal Sorey, and also spent time in foster care. In 2019, custody of Harmony was awarded to her father, Adam Montgomery. After that, Harmony lived with Adam, his wife Kayla Montgomery, and other children.
Reports later described warning signs before Harmony disappeared, including allegations of abuse and visible injuries. One of the most well-known allegations involved Harmony having a black eye. The case raised serious questions about whether child welfare agencies in Massachusetts and New Hampshire missed opportunities to protect her before her death.
Death of Harmony Montgomery
At trial, prosecutors alleged that Adam Montgomery killed Harmony in December 2019, while the family was homeless and living in a car. Kayla Montgomery testified that Adam repeatedly struck Harmony because he was angry that she was having bathroom accidents in the vehicle. According to her testimony, Adam then concealed Harmony’s body in multiple locations, including the trunk of a car, a ceiling vent at a homeless shelter, and a walk-in freezer at his workplace, before disposing of her remains in March 2020.
Harmony’s body has never been recovered.
Investigation
Harmony was not reported missing until 2021. Once the case became public, Manchester police began searching for answers, including the last places Harmony had lived.
On January 8, 2022, police searched a home on Gilford Street in Manchester, New Hampshire, described as the last known place where Harmony had lived.
On August 11, 2022, the New Hampshire Attorney General’s Office announced that Harmony was believed to have been murdered in 2019 based on recently confirmed biological evidence. On October 24, 2022, Adam Montgomery was formally charged with Harmony’s murder.Criminal Case Against Adam Montgomery
Adam Montgomery was charged with second-degree murder, second-degree assault, falsifying physical evidence, abuse of a corpse, and witness tampering.
His murder trial began in February 2024. Adam Montgomery attended jury selection but did not attend most of his trial. During the proceedings, the state presented evidence and testimony describing Harmony’s killing and the concealment of her body.
On February 22, 2024, Adam Montgomery was convicted of second-degree murder in Harmony’s death.
On May 9, 2024, Judge Amy Messer sentenced him to 56 years to life in prison for Harmony’s murder and related offenses. The sentence was ordered to run consecutively to the decades-long sentence he was already serving for unrelated weapons convictions. At sentencing, prosecutors and family members urged Adam Montgomery to reveal where Harmony’s remains were located. He did not do so. Investigators said the search for Harmony’s remains would continueLegal Death and Civil Case
Harmony Montgomery had been missing for two years before anyone realized she was gone. Harmony was last seen in the fall of 2019 in Manchester, New Hampshire, but for two whole years, nobody reported her missing. Harmony Renee Montgomery was born on June 7, 2014, to Adam Montgomery and Crystal Sorey. In an interview, Crystal Sorey revealed that they were homeless when Harmony was born. This was due to Adam’s disrespectful behavior towards his grandmother using drugs in her bathroom. (source Twitter Spaces)
It was not entirely clear to the medical providers at Harmony’s birth what medical conditions she had. The medical experts believed that Harmony would either be severely disabled or never be able to see. However, Harmony proved them wrong. Despite being blind in one eye, she grew stronger with each passing week. As she grew into a toddler, it became evident that, despite some visual impairments, she had developed superior coping mechanisms and a talent for overcoming obstacles. At the time of Harmony’s disappearance, she lived with her father, stepmother, and the couple’s two children. Harmony’s mother, Crystal Sorey, had lost custody of her daughter due to substance abuse problems. Read More Here
In December 2021, when authorities finally began searching for the missing child, they were two years behind in the search. Six months into the missing person’s investigation, the little girl’s father and stepmother were later charged with second-degree murder, tampering with witnesses, falsifying evidence, and abuse of a corpse.Because Harmony’s remains were never found, her mother, Crystal Sorey, pursued legal steps to have Harmony declared deceased. Harmony was later legally declared dead, allowing her mother to move forward with civil action.
On May 6, 2026, Judge Michael A. Klass issued a $15.5 million judgment against Adam Montgomery in a wrongful death lawsuit brought by Crystal Sorey as administrator of Harmony’s estate. The order was issued after Montgomery failed to respond to the lawsuit.
The judgment stated that Adam Montgomery had been convicted of beating Harmony to death, concealing her body for months, and disposing of her in an unknown location.Appeal
Adam Montgomery appealed his conviction to the New Hampshire Supreme Court. On October 15, 2025, the court heard arguments in his request for a new trial. At that time, no immediate decision was announced.
Case Significance
Harmony Montgomery’s case became more than a murder prosecution. It became a case about missed warnings, child welfare accountability, and the consequences of children falling through gaps between systems.
Harmony was last known alive in 2019, but the public did not learn she was missing until the end of 2021. That delay became one of the most disturbing parts of the case. For years, Harmony was gone, yet no one in authority had confirmed where she was, whether she was safe, or whether she was even alive.
Her case remains especially painful because her body has never been recovered. Adam Montgomery has been convicted and sentenced, but Harmony’s family still does not have her remains, a final resting place, or the full closure they have asked for.
