Harmony Montgomery

Harmony Renee Montgomery was an American child from New Hampshire who was reported missing in 2021 after she had last been seen in late 2019.

Harmony Renee Montgomery was an American child from New Hampshire who was reported missing in December 2021, more than two years after she was last seen in late 2019. Authorities later determined that she had been killed in Manchester, New Hampshire, in December 2019, and her father, Adam Montgomery, was convicted of her murder in 2024, though that conviction was overturned by the New Hampshire Supreme Court in 2026. The case drew major attention to child welfare and missing‑child response systems in New Hampshire and Massachusetts.

Background

Harmony Montgomery was born on June 7, 2014, and spent part of her early childhood in the custody of Massachusetts child welfare authorities before her father was awarded custody in 2019. Reports indicate she had special needs and was not publicly reported missing until more than two years after she was last seen.

Disappearance and investigation

Police and prosecutors later narrowed the likely window of Harmony’s disappearance to late 2019, with last confirmed sightings placed around November to December 2019. Her case became a homicide investigation after authorities concluded that she had been murdered.

Legal proceedings

Adam Montgomery was charged and later convicted of second‑degree murder in February 2024, along with related offenses in connection with Harmony’s death. In June 2026, the New Hampshire Supreme Court overturned the murder conviction, affecting the case’s legal status.

Public response

The case led to broad public scrutiny of child protection agencies, custody decisions, and the handling of missing‑child reports. It also prompted settlements and policy discussions related to government oversight and family services.