Police Judiciaire

Anne Vernon

Violette Chatelard

Henri Vilbert

Commissioner Frédéric

Robert Manuel

Commissioner Dupuis

Yves Vincent

Inspector Giverny

Pierre Fromont

Loubier, hotel boy

Jean Tissier

Bob, the aristocrat arrested

Suzanne Dehelly

Pauline Georges

Albert Rémy

Inspector Valentin

Jean Martinelli

Director of the P.J.

Orane Demazis

Madame Cassevent

Colette Deréal

Geneviève

Guy Decomble

Inspector Mercier

René Havard

Cassou, a witness

André Jocelyn

Farnoux, the impresario who auditioned Violette