Quiller is sent to Scotland to look into the suspicious death of Sir Michael Foster. Evidence of a recent explosion alerts him to a conspiracy by a group of Scottish Nationalists. The ep. is starring Michael Jayston, Sinead Cusack, Moray Watson, Bill Simpson, John Lee, Kurt Christian, James Cosmo, Rpbert Coleby, Joe Dunlop. br br Quiller appears in a series of novels by English writer Adam Hall (Elleston Trevor's pseudonym), as a highly capable operative who is in charge of the most dangerous or the most delicate missions, and who doesn't like to carry a gun. He prefers to use his wit instead.