Colour version, from the original B&W. Fascinating political drama series with a splendid cast. Businessman and politician sir John Wilder, after becoming ambassador and special envoy for special situations and trade, pursues his tangled schemes, despite many adversaries (the original name of the series was "Special Envoy''). This is series 3 of this sequel to "The Plane Makers". Starring Patrick Wymark, Barbara Murray, Jack Watling, Michael Jayston, Clifford Evans, Peter Barkworth, Donald Burton, George Sewell, Ian Holm, David Savile, Richard Hurndall, Barrie Ingham, Norma Ronald, Robin Bailey, James Maxwell, Rachel Herbert, William Devlin, Philip Madoc, Norman Tyrrell, John Brooking, Peter Hughes, Peggy Sinclair, Ralph Michael. Written by Peter Draper, Wilfred Greatorex.