Le Fou du labo 4

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

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