Steven Bochco Creator David Milch Creator 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 Erik Dellums Inez , Harold Carmichael Guest Star Sheeri Rappaport Officer Mary Franco Guest Star Erich Anderson Don Kirkendall Guest Star Billy Gallo Romeo Rodriguez Guest Star Tawny Cypress Rosana Booth Guest Star Lourdes Benedicto Gina Martinez Guest Star Sylva Kelegian Margaret Custance Guest Star Courtland Mead Kyle Kirkendall Guest Star Ana Ortiz Maria Alvarez Guest Star Austin Majors Theo Sipowicz Guest Star Henry Simmons Actor Mark Tinker Director Bill Clark Executive Producer Robert Doherty Producer Jody Worth Writer Steven DePaul Director