Harry Houdini's real name was Weiss, and he is played here by Tony Curtis, whose real name is Schwartz.
The movie contains several factual errors, the most telling of which is the dramatization of his death. In the film he runs into a prop sword handle and ruptures his appendix, then almost drowns in the torture tank trick and dies on the stage in the arms of his wife. In real life he was punched in the stomach by a college boy who had heard that Houdini could withstand any blow without harm. This did, indeed, rupture his appendix. He later collapsed on stage, was taken to the hospital and died there.