The person at the center of this case
Jason Andrew Knapp
Missing Person · Open
28 years waiting · since 1998
Missing Person: Jason Andrew Knapp
Justice for Jason Andrew Knapp — the trail went cold in 1998, but the truth hasn't.
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Key leads to think about
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vehicle
Lead #1How did Jason's vehicle end up at Table Rock State Park, 30 miles away from his apartment, and what does this suggest about his movements?
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location
Lead #2Why would Jason travel to Table Rock State Park, and was he there voluntarily or under duress?
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evidence
Lead #3What did the extensive search of Table Rock State Park reveal, and were there any personal items or evidence found?
Jason Andrew Knapp, a 20-year-old Clemson University student, disappeared on April 11, 1998, after last being seen at his apartment on Calhoun Street in Clemson, South Carolina. His vehicle was discovered approximately 30 miles away at Table Rock State Park in Pickens County, but despite extensive searches of the park, Jason was never found. The circumstances of how his car arrived at the park and his current whereabouts remain unknown, making this case a significant mystery nearly three decades later.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
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timeline
Lead #4What is the exact timeline between Jason's last sighting at his apartment and the discovery of his vehicle at the park?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP274. Missing person: Jason Andrew Knapp.
Last known contact: 1998-04-11 in Clemson, Pickens, SC. Circumstances: According to law enforcement, Jason was last seen at his apartment in the vicinity of the 100 block of Calhoun Street in Clemson, South Carolina.
His vehicle was found at Table Rock State Park in Pickens, SC approximately 30 miles from his apartment. Despite an extensive search of the park area, Jason has not been located.
Demographics: 20 years, Male, White / Caucasian. Physical description: 6 ft 0 in, 150 lbs, hair: Brown, eyes: Blue.
Clothing and accessories: Clothing: Blue jeans, white T-shirt; Footwear: Blue sneakers; Jewelry: Possibly wearing a watch. Investigating agency: Pickens County Sheriff's Office | 200913415.
Timeline of Events
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1998-04-11
Last Known Contact
Jason was last seen at his apartment in the 100 block of Calhoun Street in Clemson, South Carolina.
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1998-04-11
Disappearance
Jason Andrew Knapp disappeared from Clemson, SC.
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1998-04-11
Vehicle Discovery
Jason's vehicle was found at Table Rock State Park, approximately 30 miles from his apartment in Clemson.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:April 11, 1998
Last Updated:September 11, 2026
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Any information, no matter how small, could be crucial to solving this case.
Phone: 8648985500
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Case Information
Incident:April 11, 1998
Last Updated:September 11, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 8648985500
You can remain anonymous