Denis Leary Tommy Gavin Actor 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 Callie Thorne Sheila Keefe Actor Susan Sarandon Guest Star Chris Bowers Guest Star Maryam Myika Day Guest Star Joey Naber Guest Star Tatum O'Neal Guest Star John Rothman Guest Star Peter Tolan Executive Producer Jim Serpico Executive Producer Kerry Orent Producer Jace Alexander Director Evan Reilly Writer