Danae, a woman who came from the sea is a beautiful blonde girl at the center of a spy story during the second world war. In Gibraltar, Italian and British divers perform mutual sabotage actions. The secret agents, on the other hand, face off on the mainland and the Italian spies have the best thanks to the girl's intervention.
| Actor | Role |
|---|---|
 Sandra MiloDanae Niebel | Danae Niebel |
 Vittorio De SicaConsole Bordogin | Console Bordogin |
| RRossella MontiLucia | Lucia |
 Juan CalvoMiguel | Miguel |
 George LynnDario Nucci | Dario Nucci |
| PPedro XimenezO'Connolly | O'Connolly |
 Luciana PaluzziNot listed | Not listed |
 Romano GaspariNot listed | Not listed |
 Nino MilanoNot listed | Not listed |
| PPatrich GreenNot listed | Not listed |
| RRoberto PetroncelliNot listed | Not listed |
 Ángela TamayoNot listed | Not listed |
| GGayetano OrdóñezNot listed | Not listed |
 Jacinto San EmeterioNot listed | Not listed |
 María VicoNot listed | Not listed |