Générique complet
Le Fou du labo 4
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
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)
Réalisation
Jacques Besnard
Réalisation
André Cagnard
Action Director
Pierre Cosson
Assistant réalisation
Jean-Marie Poiré
Second Assistant Director
Scénario
Production
Alain Poiré
Delegated Producer
Jacques Besnard
Production
Guy Azzi
Production Accountant
Mireille de Tissot
Production Manager
Robert Sussfeld
Production Manager
Alice Bogard
Unit Manager
Armand Tabuteau
Unit Production Manager
Image
Michel Lebon
Assistant Camera
Daniel Diot
Cadrage
Raymond Lemoigne
Photographie
Gilles Baudoin Peytel
Still Photographer
