Frederick Lee Moore was 51 when his home in Greensburg, Pennsylvania, was destroyed by fire on June 20, 1990. He had a longstanding habit of riding a bicycle everywhere, and the last confirmed sighting of this Caucasian man — described as between 5 feet 10 inches and 6 feet 2 inches, with white hair and brown eyes — was on June 25, 1990. After the blaze he was never seen or heard from again.

An excavation of the property referenced events from 1977 and turned up burned, charred bones that forensic testing could not conclusively identify as human. That inconclusive result deepened the mystery rather than resolving it. The complete destruction of his home followed by his immediate disappearance leaves the circumstances unclear.