Schizophrenia.

A prominent statesman orders the secret services to assassinate a certain banker who is planning to run for president. The perfect hitman must be extracted from the zone where he is serving time for murder and must remain silent. The guy has been serving 15 years for the accidental death of a drunken general during a hunting trip. He is also known by the nickname "The Mute." You couldn't come up with a better candidate. But the perfect hitman goes out of control.