Liev Schreiber is a screenwriter.
Isaac Liev Schreiber ( [ ˈliː.ɛv ] born October 4 , 1967 ) , better known as Liev Schreiber , is an American actor , director , screenwriter , and producer . That year , he made his debut as a film director and writer with Everything Is Illuminated ( 2005 ) , based on the novel of the same name .