The family of actor David Carradine, whose bound body dead in a Bangkok hotel room last week, want the FBI to investigate the death and the Post reports, "attorney Mark Geragos suggested that Carradine may have been killed as he tried to uncover groups working in the martial-arts underworld." When the secret society angle was mentioned on Larry King Live (transcript), Geragos said, "There is a suspicion that if there was some foul play, that that may be the first area where they should look." Carradine's fourth wife Gail Jenson spoke to the Daily News, "David was pretty strange. He would tie himself up, and I would walk in and see him and say, 'Oh, my God, David, you've got to be kidding me.'" A previous wife, Marina Anderson, noted Carradine's "deviant sexual behavior" in a divorce filing, also claiming he was having an incestuous relationship with a close family member; Anderson said to the Post, "If he was involved in secret societies, it was a secret that even I didn't know about. But he did have some big secrets." Related: TMZ on why a second autopsy is important.