THE UNTOUCHABLE by John Banville

This is another of those little-known masterpieces that deserves much greater recognition. More than merely a roman a clef about the Anthony Blunt spy case, it's a marvelous novel of ideas, a genuinely literary espionage novel written in a beautiful allusive prose punctuated by marvelously apt figural strokes. It's a magnificent, penetrating novel that leaves Le Carre gasping in the dust.