Newlyweds move into a house that recently saw a woman's murder for a still lost fortune, and the killer's escape. Slowly, through coincidences and ideas from a gossipy neighbor, the young bride begins to question her husband's identity.
A ventriloquist, popular on the vaudeville stage, murders his unfaithful, nagging wife in a fit of jealous rage, but feigns innocence to the police. His dummy, however, has seen all, and keeps no secrets.
A recently released convict vows revenge on the man that unjustly set him up. He meets a stranger who also has murder on his mind. They agree to kill each other's intended victims, so they can have perfect alibis.
During a stormy night at an old, isolated house in England, a lonely couple a visited by a strange little boy who seems dazed and uncommunicative, yet knows where things are in the house, and ghostly strains of "Long Long ago" can be heard.