She remembers nothing before standing at a hotel reception and signing the first, and only, name that comes into her head - Nelly Dean (Dame Eileen Atkins). Then in her room, our mystery woman opens her suitcase to find it filled with a fortune in bank notes. Completely without memory, Nelly must try to unravel the chain of events that led her to the room. This is the starting point for Maurice Hatton's thrilling mystery.