In the blacked-out carriage of a train running through "unoccupied" France sits a young American girl, Fenton Ravel. She knows that two men share her compartment, but in the blackness she cannot see their faces. As the night wears on, the two men try to draw her into their conversation - to discover what brings her alone to this dangerous country. But Fenton is too wary to speak the words aloud to strangers - that she has come to search for her lover who has disappeared in the dark intrigues that followed the coming of the enemy.
