Richard Grant is a lawyer who believes that murder under certain circumstances is justifiable. Richard's daughter, Barbara, takes her dad to a dinner party hosted by Richard's old friend, wealthy playboy, Gordon Rich. Gordon tells Richard that he and Barbara plan to marry. Richard threatens Gordon's life if he marries Barbara. Richard is unaware that Barbara has no plans to marry Gordon, and she's in love with Tommy Osgood. Richard enraged of the thought of Barbara marrying Gordon goes into Gordon's room, undetected, and kills him...Has Richard committed the perfect crime?