<p>Christie's superb stand-alone mystery, Passenger to Frankfurt, is a true masterwork of surprise and suspense, as a diplomat comes to the aid of a terrified woman in an airport, only to find that his identity has been stolen and his life is suddenly in serious jeopardy.<br />\nSir Stafford Nye's flight home from Malaya takes an unprecedented twist when a young woman confides in him that someone is trying to kill her. In a moment of weakness, he agrees to lend her his passport. Unwittingly, the diplomat has put his own life on the line.<br />\nWhen he meets the mystery woman again, she is a different person, and he finds himself drawn into a battle against an invisible--and altogether more dangerous--enemy. . . .</p>