Mark Kechely was 25 when he was last seen on December 25, 1983, in Mill Valley, California. Few details are available about the circumstances of his disappearance; records note only that he had scars on his wrists and on his left knee at the time he went missing. His case remains open in missing persons databases and is still actively listed by authorities seeking information.

Does anyone with memories of Mill Valley in 1983 or knowledge of Mark’s friends, routines, or places he frequented have information that could help investigators?