Mark Skinner Clarke, 29, disappeared from Tuckasegee, North Carolina, in December 1983 after a series of travels and sudden breaks with family. He was last heard from in January 1983 by his parents, who had last seen him that month when he was seeking medical treatment for fatigue. Mark had joined the L’Abri Christian Fellowship of England in 1982 and became estranged from some family and friends thereafter.

Physical description: 69 inches, about 155 pounds, brown hair, blue eyes, full beard in 1983, a scar from a previous neck injury and a burn scar on his right knee. Investigators learned that in early December 1983 a member of the L’Abri Fellowship may have put him on a plane to Baltimore or Washington, D.C.; from there he reportedly took a bus to Asheville, stayed in a motel on December 24, rented a car, drove to Tuckasegee with a friend, then went on to Atlanta and Columbia, South Carolina, before returning to Tuckasegee. He was transient, used cash only, and did not use credit cards. No contact has been reported since December 1983.

Does anyone who knew Mark, traveled with him that winter, or stayed in the motels and towns mentioned have information that could help explain what happened?