Russell Crowe gives an absolutely terrifying performance in Unhinged.  The film is a high-octane, single day thriller, but there are times when Derrick Borte’s movie is a straight-up horror because of Crowe.  As the story’s antagonist Tom Cooper, Crowe ditches his inhibitions.  He’s purposely underdeveloped to build an aura of mystery and terror.  The audience is given minor clues of who Tom could be, but he still resembles a stranger;  someone who could break under…