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 Henry Simmons Det. Baldwin Jones Actor Bill Brochtrup John Irvin Actor Garcelle Beauvais-Nilon A.D.A. Valerie Heywood Actor Jacqueline Obradors Det. Rita Ortiz Actor John F. O'Donohue Sgt. Eddie Gibson Actor Penny Balfour Alyssa Huber Guest Star Bruce A. Young Leonard Peeler Guest Star Francis X. McCarthy Gerald Clifton Guest Star Emmon Roache Hugh Keller Guest Star Jason Blicker Roy Wingate Guest Star Ron Dean Joe Brockhurst Guest Star Lorinne Vozoff Sharon Clifton Guest Star Dakin Matthews Simon Clifton Guest Star Chad Lindberg Eric Keller Guest Star Karina Arroyave Tanya Taylor Guest Star Jayne Taini Elaine Keller Guest Star Katie Mitchell Gloria Dawson Guest Star Scott Alan Smith Richard Weeks Guest Star Michael Bofshever Judge Stanley Carrazo Guest Star Joe D'Angerio Earl Bezdek Guest Star Katie Rich Carla Nichols Guest Star William R. Bryan Royce Purley Guest Star Jessalyn Gilsig Detective Kelly Ronson Guest Star Philip Angelotti Uniform Guest Star Tatum McCann Emily Dawson Guest Star Mark Tinker Executive Producer Bill Clark Executive Producer, Writer Nicholas Wootton Executive Producer Matt Olmstead Executive Producer Keith Eisner Writer Rick Wallace Director