When does Delvecchio return?

Delvecchio is an American drama television series that aired on CBS from September 9, 1976, to March 13, 1977. It starred Judd Hirsch as the title character, a tough, independent big-city police detective. The series was filmed on location in Los Angeles. Four years after it was cancelled, Hill Street Blues was created by Steven Bochco and Michael Kozoll.
The title character, a "tough, independent big-city police detective", had graduated from law school but failed the bar examination. His father, a barber, could not understand why Delvecchio chose a career that had him investigating crimes that included auto thefts, murders and narcotics.