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
Henri Sonois
Production Design
Jacques Martin
Props
Henri Sonois
Set Decoration
Pierre Charron
Set Decoration
Michel Lebon
Assistant Camera
Daniel Diot
Camera Operator
Raymond Lemoigne
Director of Photography
Gilles Baudoin Peytel
Still Photographer
Billy Bonnard
Key Makeup Artist
Alain Poiré
Delegated Producer
Jacques Besnard
Producer
Guy Azzi
Production Accountant
Mireille de Tissot
Production Manager
Robert Sussfeld
Production Manager
Alice Bogard
Unit Manager
Armand Tabuteau
Unit Production Manager
André Cagnard
Action Director
Pierre Cosson
Assistant Director
Jean-Marie Poiré
Second Assistant Director
René Cambon
Novel
Jacques Besnard
Writer
Jean Halain
Writer
Colette Lambert
Assistant Editor
Gilbert Natot
Editor
Claude Carliez
Stunt Coordinator
Michel Berreur
Stunts
Rico López
Stunts
Jean Jak
Boom Operator
Bernard Gérard
Music
René-Christian Forget
Sound