Agatha Christie's Masterpieces - Spy Fiction

In the novel "Passenger to Frankfurt", a bored diplomat sitting in a Frankfurt airport transit lounge is approached by a desperate woman who begs him to swap cloaks and passports to save her life. By agreeing to this reckless trade, he is instantly plunged into a dangerous global conspiracy involving a neo-Nazi underground movement, mad scientists, and a terrifying plot to dominate the world.