To start with, I am a Greene fanatic, so you might take my opinion with a grain of salt. I didn't read The End of the Affair for many years after I'd read virtually all of Greene's other novels. I love his thrillers, his adventures, his "serious" works. But I didn't think I'd love a book about an adulterous affair, particularly one with God and Catholicism at its center. I finally got around to it. How wrong, wrong, wrong I was.Having read it twice, I now have to ask whether it's Greene's best book. Every aspect of the book is unexpected: the reason their affair ends, why she leaves, who the man she's seeing is, Bendrix's response, all the way to the end where Bendrix befriends her husband.What in other hands would have been a simple morality play, is so much more thrilling. An absolute masterpiece, unlike anything else written by GG (or anyone else).