What a cast folks, with actors such as Claude Akins, Lee Marvin and Ricardo Montalban...the beginning is terrific, with this sequence of the dancing girl - Sondra Locke, Watch out - strangled by an unknown man, whose voice indicates that it is Lee Marvin. Marvin is terrific in this story as a health club owner, who is also a former war comrade of Ricardo Montalban whose character is an attorney. Marvin makes a strange proposal to his friend, a very strange one, I assure you. He confesses with half words that he is the killer, but he has never left any evidence on the crime scenes. So he intends to play a sort of deadly game with the attorney. Marvin is outstanding in this psycho character. A cat and mouse game, as you can guess, more than exciting and given by Bernie Kowalski. Don't miss the fight between Montalban and Marvin, in the gym, don't miss this powerful sequence. At any cost. A must see tale.