David Milch Creator Steven Bochco Creator, Executive Producer Dennis Franz Det. Sgt. Andy Sipowicz Actor Mark-Paul Gosselaar Det. John Clark, Jr. Actor Gordon Clapp Det. Greg Medavoy Actor Charlotte Ross Det. Connie McDowell Actor Henry Simmons Det. Baldwin Jones Actor Bill Brochtrup John Irvin Actor Garcelle Beauvais-Nilon A.D.A. Valerie Heywood Actor Esai Morales Lt. Tony Rodriguez Actor Jacqueline Obradors Det. Rita Ortiz Actor John F. O'Donohue Sgt. Eddie Gibson Guest Star Michael Reilly Burke James Carlin Guest Star Casey Siemaszko Capt. Pat Fraker, IAB Guest Star Chandra West Dr. Jennifer Devlin Guest Star Cyrus Farmer Craig Woodruff Guest Star Andre Kinney Michael Woodruff Guest Star Ron Dean Joe Brockhurst Guest Star Daniel Benzali James Sinclair Esq. Guest Star William Dennis Hunt Judge Edgar Byrnes Guest Star Kim Delaney Diane Russell Guest Star Jessalyn Gilsig Detective Kelly Ronson Guest Star Mark Tinker Executive Producer, Director, Writer Bill Clark Executive Producer, Writer Nicholas Wootton Executive Producer, Writer Matt Olmstead Executive Producer, Writer Keith Eisner Writer Greg Plageman Writer Bonnie Mark Writer Tom Szentgyorgyi Writer Dennis Dugan Director Mark Piznarski Director Jesse Bochco Director John Hyams Director