The Lost Son

British private investigator Xavier Lombard (Daniel Auteuil) gets a new case from an old friend at the Paris police department -- a man who once saved his life and whose brother-in-law has now disappeared. As part of the assignment, Lombard must persuade a high-class prostitute (Marianne Denicourt) to help him find the boss of a pedophile network. But he soon learns he's in serious danger.