Unless you count "North by Northwest," this is my favorite spy film. It is also one of the few Hollywood movies with a European sensibility. James Mason and Danielle Darrieux both give superb performances.

Wonderful spy thriller (with undertones of witty humour) powered by a first rate cast led by incomparable Mason, a master at capturing every facet of his character's multiple levels of deceit. Darrieux is his match in a less obviously great performance as his partner in crime. Director Mankiewicz's uncredited fingerprints are all over the screenplay, which provides clever commentary on the incompetencies of the governments on both sides, criticisms which still sting to the present day.

Excellent performances - good suspense