A man who is lying will eventually change his story

A little car accident, followed by a coma for four days and the guy's life has gone totally upside down. His wife doesn't remember him, no one else either, as if the collective memory of the world have forgotten him. Fucking not cool as paranoia sets in. He needs the help from the former officer of the Stasi to convince him that he is he. Truly an interesting plot. Flawed, as usually is the case with these kind of films, but a proper intriguing multi-layered mystery and it's technically perfect action.