This is the first in a series of five stories by Agatha Christie highlighting the detective team of Tommy and Tuppence Beresford. In this first episode they are not yet married, just good friends who find themselves without jobs after World War I. The story begins with the torpedoing of the Lusitania. Before the ship sinks, a strange passenger gives a young girl, Jane Finn, an important but secret government document. Jane survives the shipwreck, but the stranger dies, the girl is kidnapped, and