Audiobook Title:
Passenger to Frankfurt (Unabridged)
By: Agatha Christie

Their paths are to cross again and again, and each time the mystery woman is introduced as a different person. Equally at home in any guise in any society, she draws Sir Stafford into a game of political intrigue more dangerous than he could possibly imagine.

In an arena where no one can be sure of anyone, Nye must do battle with a well-armed, well-financed, well-trained, and invisible enemy.