Brotherhood of the Wolf (French: Le Pacte des loups) is a 2001 French historical horror-action film directed by Christophe Gans, written by Gans and Stéphane Cabel, starring Samuel Le Bihan, Mark Dacascos, Emilie Dequenne, Monica Bellucci, and Vincent Cassel. Wikipedia
(Sylvia stabs Jean-Francois's dead body)
Capitaine Duhamel: He was dead.
Sylvia: Now it's certain.