A novelist (Patrick Holt) and his wife (Diana Dors) are sleeping peacefully in their new cottage when a mysterious older lady (Cicely Courtneidge) arrives, apparently stranded in a storm. She hands the writer her gun and some jewellery for safe-keeping, and asks for a bed for the night. Unfortunately, someone shoots her during the night and the author is accused of the crime. He is forced to turn detective to defend himself.