Le Fou du labo 4

Pierre Tornade as DST inspector Jean Franval as DST inspector Guy Delorme as Actor from the western (uncredited) Margo Lion as Mrs. Ballanchon, Eugène's mother Robert Dalban as Merchant, spy in the laboratory André Chaumeau as Baron Paul Préboist as Agent Sabine Sun as Baroness André Cagnard as Jo (uncredited) Marius Gaidon as Police officer (uncredited) Jean Ozenne as Minister (uncredited) Henri Virlogeux as Scholar Alain Janey as Fred Laure Paillette as Traveler (uncredited) Michel Serrault as Mr. Granger, director of the scientific laboratory Pierre Brasseur as Father Ballanchon Mario David as Mario Yvon Sarray as Pedestrian Henri Guégan as Actor from the western (uncredited) Lionel Vitrant as Actor from the western (uncredited) 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

Rico López Stunts Jacques Besnard Director, Producer, Writer Michel Berreur Stunts Jean-Marie Poiré Second Assistant Director Jean Halain Writer René-Christian Forget Sound Alain Poiré Delegated Producer André Cagnard Action Director Bernard Gérard Original Music Composer Claude Carliez Stunt Coordinator