Jason Knapp was a 20-year-old mechanical engineering student at Clemson University when he was last seen by his roommates on the evening of Saturday, April 11, 1998, at his apartment near campus. He had recently been inducted into the Pershing Rifles ROTC unit and was described as being in good spirits. Concern grew after he missed his regular daily call to his mother.

Ten days later his white 1990 Chevrolet Beretta was found locked and abandoned in a parking area at Table Rock State Park, about 30 miles from Clemson. Untouched food and drinks were inside the car, and a park pass bearing his fingerprints confirmed he had been at the park. A large search of the park — including ground teams, canine units, helicopters and the draining of a lake — produced no sign of Jason.

Investigators never ruled out foul play, though no evidence supporting that theory has been made public. No arrests or named suspects have emerged; a convicted serial killer questioned in 2008 was later ruled out. Jason Andrew Knapp was legally declared deceased on January 31, 2018, and the Pickens County Sheriff’s Office lists the case as open. If anyone knew Jason or saw him near Table Rock State Park in April 1998, please share what you remember.