An excellent spy movie

Rating: 9/10 (15 November 2006)

Taking place in South Boston, this is a tale of police officers and Irish gang members spying on one another. Infiltrated young undercover cop assigned to the Irish mafia mob gets to gain the trust of chief Frank Costello. On the other side, another young officer has infiltrated the police department as an informer working for Frank. Both of these cops become deeply involved with their own task and end up with a double life. Each running scared trying to uncover the identity of the other man before it is too late.
This is a classic spy movie with great performance (all around) from some of the best in Hollywood. If you liked the "usual suspect", you will like this film as well. You will not know who is spying on who until the VERY end of the movie. With multiple endings, it leaves you thinking for days.