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 Kim Delaney Diane Russell Actor Gordon Clapp Det. Greg Medavoy Actor Nicholas Turturro Detective James Martinez Actor Andrea Thompson Det. Jill Kirkendall Actor Bill Brochtrup John Irvin Actor Henry Simmons Det. Baldwin Jones Actor Richard Libertini Luciano Baca Guest Star Amy Aquino Annabelle Cito Guest Star Alimi Ballard Marcus Potter Guest Star Samantha MacLachlan Cherilyn Guest Star Rino Romano Frank Genova Guest Star Mario Bosco Anthony Guest Star Marie Caldare Theresa Mangano Guest Star Bill Clark Executive Producer, Writer Mark Tinker Executive Producer, Director Robert Doherty Producer Hugh Levick Writer Clark Johnson Director