Le Fou du labo 4

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

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