Tandemist (uncredited)
La inocente Ariane Chavasse (Audrey Hepburn) es seducida por un playboy millonario norteamericano llamado Frank Flannagan (Gary Cooper). Pero éste ignora que el padre de la chica es el detective privado Claude Chavasse (Chevalier).
A teacher writing a book about gambling meets a hotel/casino owner threatened by a gangster.
Steve Gordon, an American agent posing as a black market operator, is in Tangier on a mission to stop the plans of three atomic-scientists who are there to pool their secrets and sell them in a package to the Communists.