Köstebek

In South Boston, the state police are targeting an Irish-American organized crime ring and a young undercover cop is assigned to infiltrate the mob syndicate. Meanwhile, a hardened young criminal has infiltrated the corrupt police department. As each man becomes deeply consumed by his double life, the entities that they are investigating start to realize that there's a mole in their midst, and each must race to uncover the identity of the other, in order to survive.