Mary Carol Allen was 57 when she was last seen in Alpena, Michigan, on the evening of January 22, 2015. Her brother dropped her at her Avery Street residence at about 6:30 p.m., the last confirmed sighting. At the time she went missing she was described as a Caucasian woman with graying brown, shoulder-length hair and brown eyes, about 5 feet 3 inches to 5 feet 5 inches tall and roughly 130 pounds, wearing a tan winter-weight jacket without a hood. She needed medication, and authorities considered her endangered from the start.

An extensive search followed over three days. The Alpena Police Department led the investigation with assistance from the Michigan State Police, a state police helicopter, K-9 tracking teams, the Alpena Sheriff Department Search and Rescue Team and local volunteers. Automated phone calls were also made to nearby households, but no sign of Mary was found and the active search was suspended.

Anyone who knew Mary, saw her in Alpena on January 22, 2015, or has information that could help should contact the Alpena Police Department.