The continuous ringing of the doorbell disturbs the shower of Detective Sergeant Albert Noel Parke, after he comes home to his wife from a tiring 20-hour shift. When he opens the door, the caller has already left, but what awaits him in his lounge is a gut-wrenching sight, even for a police officer. The stock-piling evidence points to Parke being the cold-blooded killer of his wife. Yet circumstances take a fortunate turn when a chance incident leads to discovering the real perpetrator behind the crime. All is well until ten years later, when Parke marries for a second time and his wife is strangled to death in the room on their honeymoon. All suspicion points to the same murderer who killed Parke's first wife.