Quiller (1975) HD E8 "The Thin Red Line" - Michael Jayston, Moray Watson, Christopher Neame

Kinloch receives anonymous letters about a group of officers raising cash through robberies to fund a coup against the Labour government. Quiller infiltrates the Lion of England Club to root out the source. The ep. is starring Michael Jayston, Moray Watson, John Phillips, Peter Jeffrey, Christopher Neame, Esmond Knight, Richard Warwick, Peter Graves, Caroline Harris, Norma West, John Blythe, Michael Bangerter, Nick Brimble, John KellandJ ean Rimmer, John Berwyn.
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".