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 Ashlie Atkinson Guest Star Peter Bradbury Guest Star Arthur S. Brown Guest Star Robert John Burke Guest Star Lenny Clarke Guest Star Tony Cox Guest Star Peter Tolan Executive Producer, Writer Jim Serpico Executive Producer Kerry Orent Producer Jace Alexander Director