Patrick Macnee Actor Diana Rigg Actor Nigel Green Guest Star Jack MacGowran Guest Star Neil Hallett Guest Star Colin Jeavons Guest Star Roy Patrick Guest Star John Garrie Guest Star Donald Pickering Guest Star William Fox Guest Star A.J. Brown Guest Star Hilary Wontner Guest Star John Crocker Guest Star Ann Sydney Guest Star Gordon Flemyng Director Peter Duffell Director Albert Fennell Producer Brian Clemens Producer Julian Wintle Executive Producer Richard Harris Writer