Damon plays Colin Sullivan in the crime drama, The Departed. Two fresh graduates from the Massachusetts Police Academy traverse two different sides of the law. Billy Costigan must work undercover and infiltrate mobster Frank Costello’s gang, and Sullivan who works for Costello, is the mob’s eyes and ears in the police force. The two officers race to find the identity of one another. Co-starring Leonardo DiCaprio, Mark Wahlberg, and Jack Nicholson.
I did all this research and went with the state police and did everything from listening in on a wire to observing under-covers, to buying drugs.