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,
Z. Z. Hill 48, from a heart attack arising from a blood clot formed after the accident. Hill's song "That Ain't the Way You Make Love" was sampled by Madvillain in their track "Fancy Clown". Z. Z. Hill Arzell J. Hill (September 30, 1935 – April 27, 1984), known as Z. Z. Hill (pronounced "Zee Zee"), was an American blues singer best known for his recordings in the 1970s and early 1980s, including his 1982 album for Malaco Records, "Down Home", which stayed on the Billboard soul album chart for nearly two years. The track "Down Home Blues" has been called the best-known