Lisbon, the capital of Neutral Portugal, is a hotbed of spies. Mario, a cabaret singer working for the Allies is responsible for the death of an Italian agent. His widow Irène heads to Portugal and in her desire for revenge she agrees to work for the Nazis.
| Actor | Role |
|---|---|
 Viviane RomanceIrène Dumesnil | Irène Dumesnil |
 Clément DuhourMario de Falla | Mario de Falla |
 Valentina CorteseMaria Pilar | Maria Pilar |
 Gina FalckenbergHilde von Baldur | Hilde von Baldur |
 Fosco GiachettiToniani | Toniani |
 Aroldo TieriNot listed | Not listed |
 Jean WallNot listed | Not listed |