When does Bert D'Angelo/Superstar return?

The series was produced by Quinn Martin. The series spun off from The Streets of San Francisco. It was screened in Britain on BBC1 in the summer of 1976. Critics compared Bert D'Angelo to the film Dirty Harry.
Bert D'Angelo was a ten-year veteran of the New York City Police Department transferred to San Francisco. He handled a variety of types of cases, including drugs, murders, and robberies.