Webthe daredevil—a man who became known as d. b. Cooper—has since eluded authorities and has almost faded into legend. 24, 1971, cooper bought a one. Collier was found partially burned and topless down an embankment in some. Webheather disappeared from athens, texas on august 27, 2009. Authorities believe she left of her own accord. She was last seen in the company of her biological. Webthis article explores 10 intriguing cases of individuals who mysteriously vanished without a trace, leaving behind perplexing unsolved mysteries and cold cases that continue to. Webwhat we do know is that on thanksgiving eve in 1971, a man identifying himself as dan cooper (d. b. actually came from a reporter mishearing the alias). Webdonald was stationed at the u. s. Air force support base near athens, greece. The granroth siblings, both avid divers, joined him. The trio made a series of.