Steven Bochco Creator, Executive Producer David Milch Creator Dennis Franz Det. Sgt. Andy Sipowicz Actor Mark-Paul Gosselaar Det. John Clark, Jr. Actor Gordon Clapp Det. Greg Medavoy Actor Henry Simmons Det. Baldwin Jones Actor Bill Brochtrup John Irvin Actor Jacqueline Obradors Det. Rita Ortiz Actor Currie Graham Lt. Thomas Bale Actor Bonnie Somerville Det. Laura Murphy Actor William Russ Hal Matheson Guest Star Mary Page Keller Brigid Scofield Guest Star Judith Hoag Paige Matheson Guest Star Corbin Bernsen Bob Cavanaugh Guest Star Robin Bartlett Evelyn Winker Guest Star Kimberly Quinn Annabelle Rhulen 'Matheson' Guest Star Rae Allen Bertha Kunitz Guest Star Vic Polizos Nick Mastriano Guest Star Cameron Dye Paul Hartley Guest Star Brenda Bakke Claudia Weintraub Guest Star Edward Edwards Norman Reese Guest Star Antoinette Peragine Nancy Donavan Guest Star Nancy Linari Allie Reese Guest Star Jennifer Straley Receptionist Guest Star Mark Tinker Executive Producer Bill Clark Executive Producer William M. Finkelstein Executive Producer, Writer Alan Rosenberg Director