Les Suspects

Charles Vanel

Commissioner Perrache of the D.S.T.

Anne Vernon

Lucette Vignon

Jacques Morel

Inspector Paul Duchamp

Maurice Teynac

Kurt Topfer

Henri Crémieux

Saab Astérich

Yves Massard

Inspector Louis Vignon

Robert Porte

Koskah

Marcelle Arnold

Lynda

Berthe Tissen

Mrs. Astérich

Edmond Ardisson

Linda

Roger Bontemps

Naval officer

Jean-Paul Coquelin

Technician from South Tunisian

René Havard

Technician from South Tunisian

Germaine de France

Mrs. Perrache

André Numès

Archivist

Philippe Olive

Journalist

Grégoire Aslan

Inspector Ben Hamman

René Blancard

Inspector Rentier

Marc Arian

Spectator at the cinema (uncredited)

Jean Dréville

Commentator (uncredited)