David Milch Creator, Executive Producer 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 Sharon Lawrence ADA Sylvia Costas Actor Gail O'Grady Donna Abandando Actor Justine Miceli Det. Adrienne Lesniak Actor Kim Delaney Diane Russell Actor Billy Gallo Jimmy Del Marco Guest Star Richard Romanus Carmine Del Marco Guest Star Michael Bowen David Tierney Guest Star James Sloyan Barry Ulin Guest Star Anna Berger Marian Kadell Guest Star Rick Aiello Joe Carlin Guest Star Julie Ariola Elizabeth Silber Guest Star Michael Silver A.D.A. Leo Cohen Guest Star Stuart Fratkin George Weiss Guest Star Mark Bramhall Tom Guest Star Richard Doyle Paul Wilson Guest Star Sam Shamshak Julius Hannon Guest Star David Harris Officer Donny Simmons Guest Star Irene DeBari Barbara Del Marco Guest Star Robert Sutton Carl , Player Guest Star Craig Damon Officer Guest Star Michael Waltman Theodore Tierney Guest Star Joe Sabatino Guard Guest Star Mark Tinker Executive Producer Nicholas Wootton Writer Elodie Keene Director