Trailer
Images
 | Jean Lefebvre as Eugène Ballanchon, scientific researcher, single |
 | Maria Latour as Régine, Mr. Beauchard's spy |
 | Bernard Blier as Mr. Beauchard, executive secretary linked to a gang |
 | Michel Serrault as Mr. Granger, director of the scientific laboratory |
 | Pierre Tornade as DST inspector |
 | Pierre Brasseur as Father Ballanchon |
 | Margo Lion as Mrs. Ballanchon, Eugène's mother |
 | Robert Dalban as Merchant, spy in the laboratory |
 | Mario David as Mario |
 | Henri Virlogeux as Scholar |
 | André Chaumeau as Baron |
 | Jean Franval as DST inspector |
 | Paul Préboist as Agent |
 | Alain Janey as Fred |
 | Sabine Sun as Baroness |
 | Yvon Sarray as Pedestrian |
 | Max Arian as Extra worker (uncredited) |
 | André Cagnard as Jo (uncredited) |
 | Guy Delorme as Actor from the western (uncredited) |
 | Marius Gaidon as Police officer (uncredited) |
 | Henri Guégan as Actor from the western (uncredited) |
 | Jean Ozenne as Minister (uncredited) |
 | Laure Paillette as Traveler (uncredited) |
 | Lionel Vitrant as Actor from the western (uncredited) |
| Directing | |
| Jacques Besnard | Director |
Art | |
| Pierre Charron | Set Decoration |
| Henri Sonois | Set Decoration |
Production | |
| Robert Sussfeld | Production Manager |
Directing | |
| André Cagnard | Action Director |
Production | |
| Alain Poiré | Delegated Producer |
Crew | |
| Michel Berreur | Stunts |
Art | |
| Jacques Martin | Props |
Production | |
| Mireille de Tissot | Production Manager |
Directing | |
| Pierre Cosson | Assistant Director |
Sound | |
| Jean Jak | Boom Operator |
| René-Christian Forget | Sound |
Camera | |
| Michel Lebon | Assistant Camera |
Production | |
| Guy Azzi | Production Accountant |
| Armand Tabuteau | Unit Production Manager |
Art | |
| Henri Sonois | Production Design |
Writing | |
| René Cambon | Novel |
| Jacques Besnard | Writer |
Production | |
| Alice Bogard | Unit Manager |
Camera | |
| Gilles Baudoin Peytel | Still Photographer |
Production | |
| Jacques Besnard | Producer |
Directing | |
| Jean-Marie Poiré | Second Assistant Director |
Crew | |
| Claude Carliez | Stunt Coordinator |
Camera | |
| Daniel Diot | Camera Operator |
| Raymond Lemoigne | Director of Photography |
Writing | |
| Jean Halain | Writer |
Editing | |
| Colette Lambert | Assistant Editor |
Crew | |
| Rico López | Stunts |
Costume & Make-Up | |
| Billy Bonnard | Key Makeup Artist |
Editing | |
| Gilbert Natot | Editor |
Sound | |
| Bernard Gérard | Original Music Composer |
