Shanghai, China. The last expatriate Westerners still living in the city are imprisoned in a hotel by the communist authorities in order to find the spy hiding among them.
Ruth Roman
as Rita King
Edmond O'Brien
as Daniel Maynard
Richard Jaeckel
as 'Knuckles' Greer
Barry Kelley
as Ricki Dolmine
Whit Bissell
as Paul Grant
Basil Ruysdael
as Rev. Hollingsworth
Marvin Miller
as Colonel Zorek
Yvette Duguay
as Leah De Verno
Paul Picerni
as Emilio De Verno
Isabel Randolph
as Mrs. Merryweather
Philip Ahn
as Major Ling Wu
Frances Rafferty
as Mrs. Warren
