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Case Description
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William Mark Adair, a 29-year-old alarm technician from Bonita Springs, Florida, was last seen on August 31, 2008. On that day, he had gone boating off the coast of Key West. At approximately 2:30 p.m., Adair sent a text message to a family friend indicating that he was returning to shore. However, he never arrived. His truck and boat trailer were later found abandoned at the marina of John Pennekamp Coral Reef State Park in Key Largo. The day of his disappearance coincided with the passage of H ...Read More
Last Seen: Aug 31, 2008
Victim Details

Jan 26, 2026

Jan 26, 2026

William

Mark Adair

29

29

5'7 inches

170 lbs

White

Male

Aug 31, 2008

Key Largo

Florida

Key Largo

Lee County Sheriff's Office

800-780-8477

01/26/2026