Toma

From Wikipedia:

Toma is an American crime drama series that ran on ABC in 1973 and 1974.

The series stars Tony Musante and Susan Strasberg and was based on the real-life story and published biography of Newark, New Jersey, police detective David Toma. Toma had compiled an amazing arrest record during his years on the force, particularly in arresting drug dealers. His boss, Inspector Spooner, was played by character actor Simon Oakland.

The series received favorable reviews and blistering criticism for its depictions of criminal and police violence. Although Toma was achieving relatively good ratings, the show was cancelled after one season. A second season was planned, but Tony Musante refused to continue with the show. Musante had told the producers at the outset that he only wanted to do one season, but they mistakenly believed he would return if the series was renewed.

Rather than recast the starring role of Toma, the show was retooled as Baretta starring Robert Blake, with violent scenes toned down. Baretta debuted as a mid-season replacement on ABC in early 1975.