Phantom Boy

Phantom Boy is a movie starring Edouard Baer, Jean-Pierre Marielle, and Audrey Tautou. A super-powered boy helps a wheelchair-bound policeman in his attempt to bring down a mob kingpin.
At a hospital in New York, Alex, a police officer, meets Leo, a boy who has the ability to get out of his body and pass through the walls like a ghost. Both team up with Mary, an intrepid journalist, to capture a disfigured villain who terrorizes the city.