Clovis Cornillac

as Commissioner Paul Valentin

Diane Kruger

as Princess Constance Radetsky

Édouard Baer

as Inspector Pujol

Olivier Gourmet

as Inspector Marcel 'Le Colosse' Terrasson

Thierry Frémont

as Piotr

Jacques Gamblin

as Jules Bonnot

Stefano Accorsi

as Trainee inspector Achille Bianchi

Léa Drucker

as Léa