An English novelist of exceptional energy, Graham Greene built a career spanning a dozen genres—most notably more than twenty novels or thrillers, as well as short stories, film reviews, travel books, plays, screenplays, and autobiography. Many of his novels wrestle with issues of belief. His personal correspondence included thousands of letters, and for much of his life he reported as a spy to the British Secret Intelligence Service. His restlessness drew him to dangerous places, adulterous relationships, self-harm, and a belief, infusing his pages, that a focus on squalor makes for an honest portrayal of the world.