A detective, despondent after the murder of his wife and forced to resign, is brought back to the force when a serial killer appears to be taunting him and turns out to be superhuman.
U.S. Marshal Sam Gerard is accompanying a plane load of convicts from Chicago to New York. The plane crashes spectacularly, and Mark Sheridan escapes. But when Diplomatic Security Agent John Royce is assigned to help Gerard recapture Sheridan, it becomes clear that Sheridan is more than just another murderer.