Having developed a revolutionary device that puts water in the mouth of all secret services in the world, professor Forrester is about to go on a conference in San Francisco under the protection of Tom Lepski, an insurer.
| Actor | Role |
|---|---|
 Michael BrandonTom Lepski | Tom Lepski |
 Sophie DuezAntonella | Antonella |
 Robert MitchumPr. Forrester | Pr. Forrester |
 Francis PerrinProf. Forrester | Prof. Forrester |
 Marie LaforêtThéa | Théa |
 Mario AdorfRadnitz | Radnitz |
 Marc de JongeVigier | Vigier |
 Daniel UbaudSilk | Silk |
 Jean-Marie LemaireNot listed | Not listed |
 Stéphane BonnetJacobi | Jacobi |
 Steve KalfaNot listed | Not listed |
| AAnne-Marie KennyNot listed | Not listed |
| LLisa TurnerNot listed | Not listed |
 André OumanskyNot listed | Not listed |
 Stéphane BouyNot listed | Not listed |
| AAngelica BartheNot listed | Not listed |
 Bruce MyersNot listed | Not listed |