
Dr. Cordelier, living in a suburb of Paris, withdraws from society to pursue research into the functioning of the human brain. His lifelong friend, Maître Joly, becomes concerned when Cordelier draws up a will that bequeaths his entire estate to a stranger, Monsieur Opale; he cannot understand why Cordelier defends him, considering Opale attacks women and children. After a colleague is killed, Joly confronts Cordelier and discovers the truth behind his friend's behavior.
Genres:

Jean-Louis Barrault as Dr. Cordelier / Opale

Teddy Bilis as Joly

Michel Vitold as Dr. Lucien Severin

Sylviane Margollé as Little Girl Attacked by Opale

Jacques Danoville as Commissioner Lardaut

André Certes as Inspector Salbris

Jean-Pierre Granval as Boss of the Short-Time Hotel

Jean Bertho as First Passer-By during the Aggression

Jacques Ciron as Second Passer-By during the Aggression

Annick Allières as Neighbor

Dominique Dangon as Little Girl's Mother

Jean Topart as Désiré, Butler

Micheline Gary as Marguerite

Céline Sales as First Girl

Jacqueline Morane as Alberte

Ghislaine Dumont as Suzy

Madeleine Marion as Juliette

Didier d'Yd as Georges, Chauffeur

Primerose Perret as Mary, Maid

Raymond Jourdan as Cripple

Jaque Catelain as Ambassador

Régine Blaess as Ambassador’s Wife

Gaston Modot as Blaise, Gardener

Jacqueline Frot as Camille

Monique Theffo as Annie

Claude Bourlon as Lise

Raymone as Madame des Essarts

Françoise Boyer as Françoise
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