Double bill of British crime dramas. In 'The Flaw' (1955), racing driver Paul Oliveri (John Bentley) comes up with a plan to kill his wife and claim her life insurance money. When her lawyer uncovers the murder plot a fight breaks out between the two men which has tragic consequences. In 'Witness in the Dark' (1959), blind telephone operator Jane Pringle (Patricia Dainton) is in the room when her neighbour is killed and the murderer accidentally comes into physical contact with her. This contact allows her to help the police identify the culprit but the killer is determined to get rid of her before he is caught.