When she learns that the Nazis have confiscated Leonardo da Vinci's masterpiece Mona Lisa, art-loving South American wanna-be spy Tamara (Jane Carr) journeys to Lisbon to snoop for the Germans in return for the iconic painting. But bumbling Nazi agents, Allied counterspies and multiple copies of the artwork soon confound her attempts at espionage.
Francis L. Sullivan
as Minghetti
Jane Carr
as Tamara
Martita Hunt
as Susan Wellington-Smythe
Ian Fleming
as Adams
Charles Victor
as Knoller
Wilfrid Hyde-White
as The art forger Ganier
Anthony Holles
as Tony Anzoni
George Street
as Hauptmann
Gerhard Kempinski
as Flugel
Leo de Pokorny
as Mario
