On a dark and foggy evening, a lost stranger seeks refuge in a nearby country estate only to discover that he has stumbled onto the scene of a murder. When the dead man's wife confesses to the crime, the sympathetic stranger agrees to provide her with an alibi. But who is this Unexpected Guest really protecting?
Agatha Christie's delicious tour-de-force features a dizzying array of twists and turns. You are truly kept guessing until the very end!