Mark Alden Dewitt was 25 when he disappeared from Marietta, Georgia after leaving a friend’s apartment on Friday, September 2, 1983, to run a brief errand and never returned. He is described as six feet tall, 170 to 180 pounds, with black hair, a mustache and brown eyes. The Cobb County Police Department was not notified until September 5, 1983, and an investigation was opened.

His case was entered into the National Missing and Unidentified Persons System in October 2015 and remains an open cold case with the Cobb County Police Department.

If anyone knew Mark, his routines in Marietta, or has information about the Mercedes Benz, please share what can help bring answers.