September 1939. England is at war with Nazi Germany. In Southampton, the world’s most luxurious airliner—the legendary Pan Am clipper—takes off for its final flight to neutral America. Aboard are the cream of society and the dregs of humanity, all fleeing the war for reasons of their own. They are shadowed by a danger they do not know exists and heading straight into a storm of violence, intrigue, and betrayal.

This is a tale of daring and desperation, where ordinary people are caught in extraordinary circumstances.