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 Jacqueline Obradors Det. Rita Ortiz Actor Currie Graham Lt. Thomas Bale Actor Bonnie Somerville Det. Laura Murphy Actor Lisa Lackey A.D.A. Lori Munson Guest Star Mary Page Keller Brigid Scofield Guest Star Cyrus Farmer Craig Woodruff Guest Star Scott William Winters Detective Stan Hatcher Guest Star Andre Kinney Michael Woodruff Guest Star Scott Atkinson Steve McClintock Guest Star Kathryn Meisle Janet Welker Guest Star Barry Shabaka Henley Archie Day Guest Star Boris Krutonog Misha 'Russian Mike' Noishikov Guest Star James Martin Kelly Chief Duffy Guest Star Andrew Sikking Uniform Sergeant Guest Star Billy Concha Officer Miller Guest Star Mark Tinker Executive Producer, Director Bill Clark Executive Producer, Writer William M. Finkelstein Executive Producer, Writer Matt Olmstead Executive Producer Carol Banker Director Nicholas Wootton Executive Producer, Writer Keith Eisner Writer Tom Szentgyorgyi Writer Kevin Hooks Director Greg Plageman Writer Jesse Bochco Director John Hyams Director Tawnia McKiernan Director