Caught in a loveless marriage, Dr. John Winnington (Ronald Howard) can't stop himself from falling for his wife's (Mary Laura Wood) younger sister, Christine (Olga Edwardes). But when he suddenly becomes the prime suspect in his wife's tragic murder, John relies on his friend Eric (John Bentley) to clear his name. This classic murder mystery encourages viewers to evaluate all of the clues and guess the killer's identity.
A vacationing journalist investigates the mysterious death of a composer and debunks the theory that it was suicide.
A vicious gang of crooks plan to steal the wages of a local factory, but their carefully laid plans go wrong, when the factory employs an armoured van to carry the cash. The gang still go ahead with the robbery, but when the driver of the armoured van is killed in the raid, his wife plans revenge, and with the police closing in, the gang start to turn on each other.
