Isaac Liev Schreiber is an American actor, producer, director, and screenwriter. He became known during the late 1990s and early 2000s, having appeared in several independent films, and later mainstream Hollywood films, including the Scream trilogy of horror films, Phantoms, The Sum of All Fears, X-Men Origins: Wolverine, Salt, Taking Woodstock, and Goon.
Schreiber is also a respected stage actor, having performed in several Broadway productions. In 2005, he won a Tony Award as Best Featured Actor for his performance in the play Glengarry Glen Ross. That year, he made his debut as a film director and writer with Everything Is Illuminated, based on the novel of the same name. He also plays the eponymous lead character on the Showtime series Ray Donovan. He narrates the HBO series 24/7, as well as various PBS programs.