David Milch Creator, Executive Producer, Writer Steven Bochco Creator, Executive Producer Jimmy Smits Det. Bobby Simone Actor Dennis Franz Det. Sgt. Andy Sipowicz 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 John Finn Lt. John Shannon Guest Star Lourdes Benedicto Gina Colon Guest Star Scott Jaeck FBI Agent Kriegel Guest Star Michael Silver A.D.A. Leo Cohen Guest Star Scott Allan Campbell IAB Sgt. Jerry Martens Guest Star Clifton Powell Gerald , Frankie Guest Star David Parker Customer Guest Star Sharon Lawrence ADA Sylvia Costas Guest Star Mark Tinker Director, Executive Producer