James "Jimmy" McNulty
Played by Dominic West
Irish whiskey. The stick. A good hard case. And women. These are some affinities in the life of officer Jimmy McNulty. A failed marriage, drunkenness, philandering, disturbing co-workers in the middle of the night, insubordination and backdooring aside, McNulty is good police - both in skill and heart - driven by a propensity for solving cases.