Jim Thompson
Known as the “Thai Silk King,” Thompson led an interesting life. He started off as an architect, then joined the OSS (the pre-CIA), and was sent to Thailand. After he left the OSS, he started a silk business, and was quite successful.
In 1967, however, he left his “Moonlight” bungalow in Panang, Thailand, for an afternoon stroll, and never returned. There was no trace ever found of him again.