David Milch Creator, Executive Producer, Writer Steven Bochco Creator, Executive Producer Dennis Franz Det. Sgt. Andy Sipowicz Actor Ricky Schroder Det. Danny Sorenson Actor James McDaniel Lt. Arthur Fancy Actor Nicholas Turturro Detective James Martinez Actor Gordon Clapp Det. Greg Medavoy Actor Kim Delaney Diane Russell Actor Andrea Thompson Det. Jill Kirkendall Actor Bill Brochtrup John Irvin Actor Sheeri Rappaport Officer Mary Franco Guest Star Dana Wheeler-Nicholson Jenny Peters Guest Star Rodney Eastman Tommy Guest Star Kyle Brent Gibson Jason Lopez Guest Star Ivonne Coll Sonia Lopez Guest Star Clay Wilcox Jeff Chase Guest Star Sam Lloyd Larry Guest Star John F. O'Donohue Det. Eddie Gibson Guest Star Debra Monk Katie Sipowicz Guest Star Mark Tinker Executive Producer, Director Bill Clark Executive Producer, Writer Meredith Stiehm Writer Robert Doherty Producer