Pierre Brasseur

as Professor Génessier

Alida Valli

as Louise

Édith Scob

as Christiane Génessier

Juliette Mayniel

as Edna Gruber

Alexandre Rignault

as Inspector Parot

Béatrice Altariba

as Paulette Mérodon

Charles Blavette

as Man from the Pond

Michel Etcheverry

as Doctor Lherminier, forensic surgeon