Harris Yulin guest stars as Detective Grissom, a law enforcement officer who is more interested in self-glorification than in justice. Grissom's insatiable thirst for fame proves to be a royal pain for his temporary partner, undercover cop Tony Baretta (Robert Blake). In his efforts to catch a gun dealer who sells to teens, Baretta is constantly flustered by Grissom's egomaniacal interference. ~ Hal Erickson, Rovi