The Postman Always Rings Twice that's a book that I think every writer should read - that has to do with technique. But it's also a novel narrated by a guy who has decided by page 11 that he's fallen in love with a woman, and they're going to murder her husband so they can be together. There's nothing remotely likeable about him, but James M. Cain brings you so far into his head that, at a certain point, you have that uncomfortable but also thrilling sensation of seeing things exactly as he sees it.