He performed quite well in a limited role, but seems a little out of place for a New York LEO. He sounds and looks like a Texan (he's originally from Kansas). He spoke 50 words. Otherwise, the show was quite good and shows the corrupting influence of politics and how one's shenanigans can catch up with one.
It does bother me the lack of compassion Goren and Eames show when they catch their man and continue dumping on him especially when he sees what tragic mistakes he made. They show that when the perp asks for a little respect. Considering he's going to concede to everything and seems to have genuine remorse, it's a surprise they keep pounding away at him. Of course, as a murderer, they feel dumping on him is justified.