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,
William Smith (actor) Sid Haig, the latter of which was directed by Seymour Robbie and written by Ann-Margret's husband, actor Roger Smith. He starred in 1972's "Grave of the Vampire" as James Eastman (co-starring with Michael Pataki and Lyn Peters), and 1973's "Invasion of the Bee Girls" (co-starring Victoria Vetri, Anitra Ford and Katie Saylor, written by Nicholas Meyer and directed by Denis Sanders), and 1975's "The Swinging Barmaids" (starring Ms. Saylor, Bruce Watson and Laura Hippe, and directed by Gus Trikonis). In 1972 and 1975, respectively, he appeared in two popular Blaxploitation films, "Hammer" and the controversially titled "Boss Nigger", both with