Harry tries to get in a poker game wherein a known poker player whom Harry wants to play with will be in. So he asks Maginnis to help him, so she contacts a restaurateur who will also be at the game to help Harry. He offers to pay Harry's stake saying he wants him to keep an eye on the player because they don't know if he is on the up and up. Later the restaurateur's wife is killed and the suspect is another man who was at the game who left early. The man admits that he and the woman were having an affair but he didn't kill her. Harry thinks the restaurateur had his wife killed and brought Harry to the game to be his alibi. Harry along with the player, who wants to be detective try to prove it.