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 Brad Sullivan Patsy Ferrara Guest Star Paul Ben-Victor Steve Richards Guest Star Leon Russom William Crawford Guest Star Jack Kehler Jimmy Step-and-a-Half Guest Star Glenn Morshower Special Agent Wilson Guest Star Bill Capizzi Fat Mike Guest Star Louis Mustillo Tommy Furmento Guest Star Titus Welliver Dr. Mondzac Guest Star Seth Isler Bielski Guest Star Lou Sumrall Larry Simms Guest Star Andy Romano Inspector Aiello Guest Star Bruce Kirkpatrick First Officer Guest Star Bill Clark Detective Clark Guest Star Don Robb Bernard Kaiser Guest Star Stephen Ramsey FBI Agent Guest Star Mark Tinker Executive Producer David Mills Writer Davis Guggenheim Director