Directed by Martin Scorsese and starring an all-star cast including Matt Damon, Leonardo DiCapprio, Jack Nicholson, and many others, this is a crime thriller with an interesting concept. The plot has to do with two young men who were in the Massachusetts Police Academy. One is tailored by the Irish mobster Frank Costello to become a mole within the police. The other is called upon to infiltrate the mob before he graduates. Thus begins their dangerous assignments as each tires to find the rat in the other organization while also working to stay out of reproach. Costigan is able to get close to the vile Costello while Sullivan is part of the Special Investigation Unit and also begins a relationship with a psychologist. They must secretly keep contact with the other side but it becomes increasingly treacherous with one encounter leading to a chase and another in the death of a police captain. The heat is on as both men try and reveal the other mole. During a cocaine pick up Costello is traced to the spot and a chaotic shootout ensues. Everything seems calm again and yet Constello’s mole is still around and bent on erasing Costigan from record. They agree to meet on a roof top and from that point on the film moves so rapidly it is almost impossible to take in what happens. Everything seems confused and corrupted but ultimately it does not pay to be a rat. This film has a lot of coarse language and violence but in Scorsese’s hands it is still an intriguing film to watch.