David Milch Creator Steven Bochco Creator, Executive Producer Dennis Franz Det. Sgt. Andy Sipowicz Actor Mark-Paul Gosselaar Det. John Clark, Jr. Actor Gordon Clapp Det. Greg Medavoy Actor Charlotte Ross Det. Connie McDowell Actor Henry Simmons Det. Baldwin Jones Actor Bill Brochtrup John Irvin Actor Garcelle Beauvais-Nilon A.D.A. Valerie Heywood Actor Esai Morales Lt. Tony Rodriguez Actor Jacqueline Obradors Det. Rita Ortiz Actor Casey Siemaszko Capt. Pat Fraker, IAB Guest Star Chandra West Dr. Jennifer Devlin Guest Star Nick Sandow Ray Wilentz Guest Star Brian Stepanek Freddie Langford Guest Star Phillip Van Dyke Adam Wilentz Guest Star Arjay Smith Mickey Economides Guest Star Kevin Chapman Brad Riggs Guest Star Helen Slayton-Hughes Grace Langford Guest Star Daniel Benzali James Sinclair Esq. Guest Star William Dennis Hunt Judge Edgar Byrnes Guest Star Julia Murney Nancy Schaffer Guest Star Michael Tinker Uniform Guest Star Mark Tinker Executive Producer, Director Bill Clark Executive Producer Nicholas Wootton Executive Producer Matt Olmstead Executive Producer Keith Eisner Writer