​From Wikipedia, the free encyclopedia Biff Elliot (July 26, 1923) is an American actor. He is perhaps best known for his role as popular detective Mike Hammer in the 1953 version of I, the Jury, and as his guest appearance in the Star Trek episode "The Devil in the Dark". Description above from the Wikipedia article Biff Elliot, licensed under CC-BY-SA, full list of contributors on Wikipedia.