Denis Leary Tommy Gavin Actor, Writer James McCaffrey Jimmy Keefe Actor Andrea Roth Janet Gavin Actor Michael Lombardi Mike Silletti Actor Jack McGee Chief Jerry Reilly Actor Steven Pasquale Sean Garrity Actor Daniel Sunjata Franco Rivera Actor John Scurti Lt. Kenny "Lou" Shea Actor Diane Farr Laura Miles Actor Caprice Benedetti Guest Star Gene Canfield Guest Star Olivia Crocicchia Guest Star Rosemarie DeWitt Guest Star Natalie Distler Guest Star Trevor Heins Guest Star Peter Tolan Executive Producer, Director, Writer Jim Serpico Executive Producer Kerry Orent Producer