Z-Cars further spin-off entitled "Second Verdict" in which Barlow and Watt looked into unsolved cases and unsafe convictions. Frank Windsor made a final appearance as Watt in the last episode of "Z-Cars", "Pressure", in September 1978, with Robins (John Phillips), the Detective Chief Superintendent from the original series who had risen to chief constable. Jeremy Kemp, Brian Blessed, Joseph Brady and Colin Welland also appeared, though not as their original characters. "Z-Cars" is incomplete in the archives. The period 1962–65 is reasonably well represented; though with big gaps. With the 1967–71 sixth series, when the programme was shown almost every week,
Theme from Z-Cars the 1960s. Sunderland A.F.C. were also known to have played the song as their players ran out to the field during their days playing at Roker Park. Theme from Z-Cars "Theme from "Z-Cars"" was the theme tune to the long-running BBC television drama "Z-Cars". Based on the traditional folk song "Johnny Todd", which was in a collection of traditional tunes by Frank Kidson dated 1891 called "Traditional Tunes: A Collection of Ballad Airs". Kidson's notes for this song say: "Johnny Todd is a child's rhyme and game, heard and seen played by Liverpool children. The air is somewhat pleasing, and