La Marque des anges - Miserere (2013)
Directed by Sylvain White

Film Synopsis

In Paris, Lionel Kasdan, a retired anti-gang brigade chief, is investigating a mysterious murder.  A choirmaster has been found dead in his church, his eardrums burst.  Meanwhile, Frank Salek, an Interpol agent who is on the point of being dismissed by his superiors for his bad conduct, is on the trail of a child kidnapping ring.  When Salek hears about the choirmaster's killing he sees a possible connection with his own investigation and agrees to join forces with Kasdan.  As their investigation progresses, the two men are drawn into a shady affair which stems from the darkest days of World War II...