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-Cars into a new series "Softly, Softly". When the BBC was looking for a twice-weekly show to replace a series of failed 'soaps' (one example being "United!"), "Z Cars" was revived. The revival was produced by the BBC's serials department in a twice-weekly soap opera format of 25-minute episodes and only James Ellis and Joseph Brady remained from the original show's run. It was shown from March 1967, both 25-minute segments each week comprising one story. It ran like this until the episode "Kid's Stuff" (broadcast on 30 March 1971), shown as a single 50-minute episode for the week, proved the