March 21, 1906 - disappeared March 26, 1967: Age 61
Jim Thompson was an American businessman who was a military intelligence officer during WWII. After the war, he was stationed in Thailand for a year, and there he saw lots of opportunity for development in Thai business. He moved permanently to Bangkok and founded the Thai Silk Company. The company revitalized the home-weaving industry of Thailand, bringing thousands of unemployed Thais back out of poverty and making millionaires of his core worker-shareholders.
During Easter 1967, he went on holiday at a resort in Malaysia. On Sunday afternoon we went for a short walking, leaving his cigarettes behind. He never returned, and despite intense searching by tracking experts, no traces of him were ever found. The most likely explanation is that he was accidentally murdered in a robbery or fell into an animal trap, and was buried by the local indigenous people for fear of reprisal.
Sources: Wikipedia, Cameron Highlands