Denis Leary Tommy Gavin Actor, Writer Andrea Roth Janet Gavin Actor Michael Lombardi Mike Silletti Actor Steven Pasquale Sean Garrity Actor Daniel Sunjata Franco Rivera Actor John Scurti Lt. Kenny "Lou" Shea Actor Adam Ferrara Chief "Needles" Nelson Actor Callie Thorne Sheila Keefe Actor Larenz Tate Bart Actor Robert John Burke Mickey Gavin Actor Lenny Clarke Uncle Teddy Actor Natalie Distler Colleen Actor Michael Zegen Guest Star Peter Gallagher Guest Star Deanna Russo Guest Star Niels Jorgensen Guest Star Don McManus Guest Star Daniel Stewart Sherman Guest Star Peter Tolan Executive Producer, Writer Jim Serpico Executive Producer Kerry Orent Producer Constantine Makris Director Evan Reilly Writer