Crime Solvers Central
CSC
254 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

Any updates on this case? Let us know!
Joanne Thornton, a 31-year-old woman, was last seen on December 29, 1971, in Detroit, Michigan. Joanne disappeared under mysterious circumstances, and despite investigations, her case remains unsolved. Joanne was last known to be living in the Detroit area, and her family reported her missing after she failed to make contact for an extended period. Her family and friends grew increasingly concerned due to the lack of communication, which was unusual for her.

At the time of her disappear ...Read More
Last Seen: Dec 29, 1971

Links to Additional Sources (0)

See any mistakes? Let us know!

Victim Details

Jul 18, 2010

Aug 11, 2022

Joanne

Thornton

83

31

61 inches

64 inches

110 lbs

130 lbs

White / Caucasian

Female

In the winter of 1971, a 31-year-old woman named Joanne Gladys Thornton, also known by her married name Joanne Garr, vanished from the Detroit, Michigan area. The exact date of her last contact is uncertain, with records indicating it could be as early as November 24 or as late as December 29 of that year. At the time she went missing, Joanne was described as a woman with red/auburn, medium-length hair, blue eyes, and freckles on her face and arms. Her family grew deeply concerned when she failed to make contact, which was out of character for her, and they believed her disappearance was under suspicious circumstances. The situation became more alarming when her car was discovered abandoned. The investigation into Joanne's disappearance was initially handled by the Detroit Police Department before the Michigan State Police took over the case. Concerns were raised by Joanne's mother regarding her new husband, Philip, to whom she had been married for less than a year. It was reported that Joanne had been seen with bruises and black eyes, which she had attributed to a fall. When questioned about his wife's whereabouts, Philip's story reportedly changed multiple times. He initially claimed Joanne was visiting a friend in Ohio, then said she was in Illinois, and later told her mother that Joanne had packed her belongings and left him with another man in a vehicle with Ohio license plates. Despite these troubling inconsistencies and the family's suspicions, the investigation did not gain significant traction, and the case grew cold over the ensuing decades with no major leads or witnesses emerging. Joanne Thornton's case remains an unresolved mystery. For over fifty years, her family has been left without answers regarding her fate. The circumstances of her disappearance, including her husband's conflicting accounts and the reports of prior injuries, have led to a strong belief that she did not leave on her own accord. The case is a poignant example of a long-term missing person investigation where the passage of time has not diminished the hope for resolution. Authorities continue to encourage anyone with information to come forward, as even the smallest detail could potentially shed light on what happened to Joanne in 1971. The overview of this case is one of a young woman who disappeared under a cloud of suspicion, leaving behind a family to grapple with an enduring and painful uncertainty.

Dec 29, 1971

Detroit

Michigan

Wayne County

1959

Michigan State Police - Metro North Post

Oak Park

Michigan

Oakland County

48237

14350 West 10 Mile Road, Michigan

2485845740

State

Law Enforcement

21-4659-10

2010-09-15

Michigan State Police - Metro North Post

Red/Auburn

Blue

Blue

06/16/2026


Area Last Seen: