Yeah I think arguably Le Carré "invented" halogencore -- or you could say halogencore is like Alan Pakula x Le Carré or something -- especially the really grimy books like "Looking-Glass War." The BBC TTSS is so great, but some of the recent JLC adaptations are even closer to the "halogencore" ideal, not least because there's some actual flourescent lighting in them. Thinking here in particular of Anton Corbijn's "A Most Wanted Man," but also of Susanna White's "Our Kind of Traitor" and the new TTSS movie.