This is the second feature in a series about an intrepid French spy by the nickname of "The Gorilla," but unlike the earlier films, this time around Roger Hanin replaces Lino Ventura in the title role. A West German scientist has discovered a way to recover missiles shot into space, and the major Western powers are after his secret. Even though the scientist is willing to pass his discovery on to NATO, it is guarded by an elite, undercover West German police force. As foreign agents, including the Russians and Americans, try to get their hands on the secret, "The Gorilla" is forced into the affair by his surly, aging boss -- he has to make sure that the scientist's discovery ends up with NATO.
| Actor | Role |
|---|---|
 Roger HaninGéo Paquet, aka 'Le Gorille' | Géo Paquet, aka 'Le Gorille' |
 Charles VanelBerthomieu aka 'Le Vieux' | Berthomieu aka 'Le Vieux' |
 Ursula HerwigLuise Keibl | Luise Keibl |
 Jess HahnTed the Hook | Ted the Hook |
 Wolfgang PreissOtto Lohn | Otto Lohn |
 Michel ThomassBoris Almazian | Boris Almazian |
| VViktor TacikKeibel | Keibel |
 Yves BarsacqBerthier | Berthier |
| MMicheline GaryThe blonde | The blonde |
 Claude VernierRosberg | Rosberg |
 René HavardChemist | Chemist |
| TTon KuylWilhelm | Wilhelm |
 Jean JuillardFrench delegate | French delegate |
| LLutz GaborFrantz | Frantz |
 Pierre ColletBergère | Bergère |
| DDon ZieglerNot listed | Not listed |
| SSuzanne DehellyHortense | Hortense |
 Jack Ary(uncredited) | (uncredited) |
| LLucien Blondeau(uncredited) | (uncredited) |
 Pierre Grasset(uncredited) | (uncredited) |
| RRichard LarkeEnglish Commissioner (uncredited) | English Commissioner (uncredited) |
| PPeter LewisAmerican spy (uncredited) | American spy (uncredited) |