David Milch Creator Steven Bochco Creator Dennis Franz Det. Sgt. Andy Sipowicz Actor Mark-Paul Gosselaar Det. John Clark, Jr. Actor Gordon Clapp Det. Greg Medavoy Actor Bill Brochtrup John Irvin Actor Henry Simmons Det. Baldwin Jones Actor Garcelle Beauvais-Nilon A.D.A. Valerie Heywood Actor Charlotte Ross Det. Connie McDowell Actor Esai Morales Lt. Tony Rodriguez Actor Lenny Venito Julian Pisano Guest Star Lombardo Boyar Tino Guest Star Jessica Lugo Maria Feliciano Guest Star David Starzyk Special Agent Boyd Guest Star John Mendoza Bartender Guest Star Gary Wolf Jimmy Giglio Guest Star William Dennis Hurley Mike 'Fred Roberts' Graf Guest Star Jacqueline Obradors Actor Mark Tinker Director Bill Clark Executive Producer Matt Olmstead Writer