Lino Ventura

Principal Inspector Marceau Leonetti

Marlène Jobert

Jeanne Dumas, the new auxiliary

Michel Constantin

Greg, the henchman

Paul Crauchet

Jacques Loring, Martin's neighbor

Alain Mottet

Frank Lambert, Leonetti's colleague and friend

Béatrice Arnac

Silvia

Guy Heron

Soramon

Albert Dagnant

Arnold

Monique Mélinand

Mrs Loring

Marcel Pérès

Mr Lenoir

Germaine Delbat

Mrs Lenoir

Hervé Sand

Gravel

Régine Lovi

Ms Viteau, the teacher

Philippe March

Roger Martin, the missing witness

Pippo Merisi

Scrap dealer

Raymond Meunier

Allister

Jacques Marchand

Maniac

Frédéric Santaya

Favre, Allister's teammate

Robert Favart

School's director

Guy Kerner

Doctor

Jean Sobieski

Aden

Carlo Nell

Lucie Arnold

Gilette Barbier

Grocer (uncredited)

Philippe Brizard

Taxi driver (uncredited)

Michel Charrel

Raisin (uncredited)

Roger Desmare

Shoemaker (uncredited)

Max Desrau

Thouin (uncredited)

Martine Ferrière

Shoemaker's wife (uncredited)

Sébastien Floche

Caretaker of the building (uncredited)

Pierre Frag

Sandwich man (uncredited)

Jacques Galland

Director of P.J. (uncredited)

Stan Krol

Kropniak (uncredited)

Sylvain Lévignac

Gregg man (uncredited)

Roger Lumont

Storage man (uncredited)

Serge Marquand

Loudmouth (uncredited)

Colette Mars

First pharmacist (uncredited)

Bernard Musson

Pharmacist (uncredited)

Émile Riandreys

Bus traveler (uncredited)

Jacques Richard

Inspector (uncredited)

Dominique Zardi

Pervert (uncredited)

Suzy Hannier

(uncredited)

Rita Maiden

(uncredited)