Liz Kendall wouldn't hurt a fly. Even when times get tough, she's devoted to bringing up her kids in a loving home. But there's another side to Liz, one that's dark and malicious. An alter-ego that will do anything to get her way - no matter how extreme. And when this other side of her takes control, the consequences are devastating. From the author of the million-copy bestselling The Girl With All the Gifts comes an intoxicating and unique new thriller. Think Gone Girl meets Stephen King - but you won't have read anything like this before...