Tommy Gavin
Denis Leary
Jimmy Keefe
James McCaffrey
Franco Rivera
Daniel Sunjata
Mike Silletti
Michael Lombardi
Janet Gavin
Andrea Roth
Lt. Kenny `Lou' Shea
John Scurti
Sean Garrity
Steven Pasquale
Chief Jerry Reilly
Jack Mcgee
Sheila Keefe / —
Callie Thorne
Laura Miles
Diane Farr*
Laura Miles
Diane Farr
Chief 'Needles' Nelson
Adam Ferrara
Guest Star
Caprice Benedetti
Guest Star
Ashlie Atkinson
Guest Star
Marlyne Barrett
Guest Star
Jon Benjamin
Sully
Lee Tergesen
Guest Star
Shon Blotzer
Guest Star
Gene Canfield
— / Johnny Gavin
Dean Winters
Guest Star
David Alan Basche
Guest Star
James Biberi
Guest Star
Michael Zegen
Guest Star
Lyndon L Byers
Guest Star
Noelle Beck
Guest Star
Kate Burton
Guest Star
Maha Chehlaoui
Guest Star
Robert John Burke
Guest Star
Todd Carroll
Guest Star
Scott Davidson
Guest Star
Colleen Clinton
Guest Star
Lenny Clarke
Guest Star
Tim Carroll
Guest Star
Rosemarie DeWitt
Guest Star
Charles Durning
Maggie Gavin
Tatum O'Neal
Guest Star
Christopher Burns
Guest Star
Jessi Campbell
Guest Star
Olivia Crocicchia
Guest Star
Tony Cucci
Bart 'Black Shawn' Johnston
Larenz Tate
Guest Star
Trevor Heins
Guest Star
Milena Govich
Guest Star
Tom Greer
Guest Star
Natalie Distler
Guest Star
Muhammad Cunningham
—
Neal Jones
—
Timothy Adams
—
Paula Devicq
—
Patti D'Arbanville
Alicia Green
Susan Sarandon
—
Greg D'Agostino
—
Sherri Saum
—
Jarah Mariano
—
Karen Goberman