Steven Bochco Creator, Executive Producer David Milch 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 Sharon Lawrence ADA Sylvia Costas Actor Gail O'Grady Donna Abandando Actor Justine Miceli Det. Adrienne Lesniak Actor Kim Delaney Diane Russell Actor Michael DeLuise Andy Sipowicz Jr. Guest Star Mark Blum FBI Agent Mike Francis Guest Star John Del Regno Marc Margiotti Guest Star Mike Russo Fabruzzo Guest Star Thomas G. Waites Craig Herman Guest Star Patrick Fischler Ken Thornton Guest Star Dyana Ortelli Marina Bermudez Guest Star Gordon Jennison Noice Parnell Manning Guest Star James Luca McBride Officer Shannon Guest Star Joey Naber Ronnie Pinera Guest Star Michael Andrew Kelly Officer Marini Guest Star Alvin Walker Officer Culbertson Guest Star Gary Rodriguez Middle-Aged Loiterer Guest Star Bill Clark Guest Star Mark Tinker Executive Producer, Director Leonard Gardner Writer