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,
Charles Z. Smith Service also named a low-cost housing location after him. Smith and Eleanor "Elie" Jane Martinez married in 1955. They had four children who currently reside in Seattle. Smith died on August 28, 2016, at his home in Seattle, Washington. Charles Z. Smith Charles Z. Smith (February 23, 1927 – August 28, 2016) was an American judge who served as a Washington State Supreme Court Justice from 1988 to 2002. He was the first person of color and the only African American to hold the position. Smith was born in Lakeland, Florida. His father, John R. Smith, was a Cuban immigrant,