Originally Posted by Stu
An undercover cop agent. It's not something that'll be revealed until part way through the story, and should be kept a secret in the promotion of the game. Once it is, your character's mission to bring down a particular gang boss will become the driving force of the game, until it turns out that your superior officer is corrupt and is merely using you off the books to wipe out his competition, and once you find that out, he'll erase your history and real credentials, and the character will have to become a criminal for real.
Too much like True Crime: NYC.