Paul Meurisse

Character: Stanilas Octave Seminario aka 'SOS', détective

Micheline Francey

Character: Muriel Pescara, the daughter

Gilbert Gil

Character: Charles Pescara, the son

Pierre Renoir

Character: Doctor Gérard Pescara, the father

Jean Tissier

Character: Guillaume

Pierre-Louis

Character: Paul Wantz

Junie Astor

Character: Hélène Tassin, nurse

Jean Debucourt

Character: Doctor Vermeulen

Jean Brochard

Character: Investigating judge

Mady Berry

Character: Brigitte Tassin

Pierre Palau

Character: Doorman

Arthur Devère

Character: Lock keeper

Marcel Pérès

Character: Road mender

Sinoël

Character: Gardener

Georges Bever

Character: Baptiste, clerk

Madeleine Suffel

Character: Hotel boss

Michel Seldow

Character: Illusionist Pablo

Marc Arian

Character: (uncredited)

Léon Arvel

Character: (uncredited)

Alfred Baillou

Character: Man (uncredited)

Rivers Cadet

Character: (uncredited)

Marcel Charvey

Character: (uncredited)

Raymond Destac

Character: (uncredited)

Pierre Duncan

Character: (uncredited)

Cécile Eddy

Character: (uncredited)

Henry Gerrar

Character: Concierge (uncredited)

Claire Gérard

Character: Concierge (uncredited)

Colette Mareuil

Character: (uncredited)

Pierre Moncorbier

Character: (uncredited)

Geneviève Morel

Character: Pescara cook (uncredited)

Henri Niel

Character: (uncredited)

Julienne Paroli

Character: Gossip (uncredited)

Marcelle Rexiane

Character: Director (uncredited)

Maurice Salabert

Character: (uncredited)

Germaine Stainval

Character: Gossip (uncredited)

Jean-Marc Tennberg

Character: Agent on duty (uncredited)

Georgette Tissier

Character: Telephone operator (uncredited)