Lt. Mike Stone (Karl Malden) and Inspector Steve Keller (Michael Douglas) are homicide detectives cruising the streets of San Francisco, solving crimes while bantering back and forth, typically about Keller's relative inexperience and Stone's cranky set-in-his-ways attitude. in season 5, Keller left and Inspector Dan Robbins (Richard Hatch) became Stone's new rookie partner. Currently 10/10