Lino Ventura

~ as ~

Principal Inspector Marceau Leonetti

Marlène Jobert

~ as ~

Jeanne Dumas, the new auxiliary

Michel Constantin

~ as ~

Greg, the henchman

Paul Crauchet

~ as ~

Jacques Loring, Martin's neighbor

Alain Mottet

~ as ~

Frank Lambert, Leonetti's colleague and friend

Béatrice Arnac

~ as ~

Silvia

Guy Heron

~ as ~

Soramon

Albert Dagnant

~ as ~

Arnold

Monique Mélinand

~ as ~

Mrs Loring

Marcel Pérès

~ as ~

Mr Lenoir