R | | Crime, Drama, Thriller
An undercover cop and a mole in the police attempt to identify each other while infiltrating an Irish gang in South Boston.
Jack Nicholson says he joined the cast because he was looking for a "nice juicy bad guy to play."
There was a cop leaving when I came in.
Madolyn: How did you know he was a cop?
Billy Costigan: Know, bad haircut, no dress sense, and, you know, a slight air of scumbag entitlement.
When Sullivan and his pal are watching the golden dome building from a bench, from a back shot his friend has his head faced straight, but from the front shot it's sideways.
The title doesn't appear on screen until nearly 20 minutes into the movie.
£2,298,313 (UK) (8 October 2006)
$132,384,315 (USA) (22 March 2007)