In the gripping episode The Box of Death, the story begins in the early hours of the morning when a policeman stumbles upon a large wooden packing case on a darkened street. Upon investigating, he discovers that the box contains a dead man, Fred Lister, who has been shot in the head. The case takes a dire turn when the officer learns that Lister's wife, Mrs. Donald, has been anxiously waiting for her husband to return home. The shocking revelation of her husband's death sends her into a panic, and her immediate concern is for her own safety.