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