Public Prosecutor was the first dramatic series to be shot on film (in this case, 16 mm film to save production costs), instead of being performed and broadcast live. John Howard starred in the title role of a public prosecutor, along with Anne Gwynne and Walter Sande.

Jerry Fairbanks Productions filmed the pilot episode in Hollywood[4] in 1947. After the NBC Television Network picked up the series, Fairbanks filmed 26 twenty-minute episodes for a planned network premiere in September 1948.

However, the series was pulled from the network schedule when NBC decided it preferred thirty-minute episodes.