Theresa Terry Lu Burns was 28 when she vanished from Cheboygan, Michigan, on a Friday afternoon in September 1987. She attended a scheduled appointment with her attorney on September 11, 1987; later that day her car was found abandoned on the Mackinac Bridge. Her unlocked vehicle contained her purse and identification. Theresa was a married mother of three, described with brown hair and brown eyes, and was wearing a distinctive wedding ring with a criss-cross design when she disappeared.

Investigators have long considered the possibility that she jumped from the bridge. Despite extensive searches of the Straits of Mackinac and surrounding areas, her body has never been recovered. Dental records and DNA from her son have been entered into national databases in hopes of future identification. The investigation remains open, and the official theory is that she ended her own life, but without recovered remains a definitive conclusion cannot be reached.

If anyone in Cheboygan or the Mackinac Bridge area around September 11, 1987, has information about Theresa or her movements that day, can you share what you know?