We Need to Talk About Kevin

I can't possibly give this book a rating. How do you rate a book that made you literally feel nauseous as you approach the horrible climax? Do you give it one star for being so disturbing and bleak, or do you give it five stars for being beautifully written and unafraid to lay bare some ugly truths about love, parenting and life in general? To quote a line from Woody Allen's “Annie Hall” (completely out of context), reading this book is really a Kafka-esque experience.