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