In contrast to the classical detective story, the spy novel tends to be considered a suspect, less literary genre. While previous studies have focused on its historical, thematic and ideological dimensions, this critical work seeks to distinguish British espionage fiction based on its unique narrative form, which is typically elliptical, oblique and recursive. Featured works include eighteen novels by Eric Ambler, Graham Greene, Len Deighton, John le Carre, Stella Rimington, and Charles Cumming, most of which exemplify the existential or serious spy thriller. Half of these texts pertain to the Cold War era; the other half to its aftermath in the so-called "Age of Terrorism."