When 1 of 2 Foreign Legion officers is killed after witnessing a secret experiment on a death ray (capable of shooting down aircraft) in southern Morocco, the other gets vengeance by infiltrating the organization responsible.
| Actor | Role |
|---|---|
 Jean-Claude PascalJean Pasqier | Jean Pasqier |
 Gianna Maria CanaleNathalie Provence | Nathalie Provence |
 Erich von StroheimConrad Nagel | Conrad Nagel |
 Jean TissierGuillaume Provence | Guillaume Provence |
 Albert DinanRoland | Roland |
 Peter van EyckHoward | Howard |
 Daniel SoranoSerge Depoigny | Serge Depoigny |
 Lia AmandaMichèle | Michèle |
 Jean MuratIl colonnello | Il colonnello |
 Daniel LecourtoisIl comandante | Il comandante |
 Simone BachSolange | Solange |