Quiller (1975) HD E12 "Thundersky" - Michael Jayston, Lalla Ward, John Rhys-Davies, Moray Watson

General Fischer, a top NATO officer in charge tactical nuclear weapons, has vanished without a word. When his daughter Tracy arrives in Britain she vanishes. Quiller discovers a connection with Thundersky base and a murdered American. The ep. is starring Michael Jayston, Moray Watson, Paul Maxwell, Lee Montague, Lalla Ward, Lon Satton, Bob Sherman, Shane Rimmer, James Berwick, John Rhys-Davies, Ray Jewers, Frances Pidgeon.
Quiller is a fictional character created by English novelist Elleston Trevor. Quiller, whose one-word name is a pseudonym, works as a spy, and he is the hero of a series of Cold War thrillers written under the pseudonym Adam Hall, and became Trevor's most popular character. The books concern a solitary, highly capable operative who works, usually on his own, for a British government organization, referred to as "The Bureau", which "doesn't exist".