A beautiful home. A loving wife. And in-laws to die for. Gemma Robinson comes into Elliot’s life like a whirlwind, and they marry and settle into his home. When she asks him if her parents can come to stay for a couple of weeks, he is keen to oblige – he just doesn’t quite know what he’s signing up for. The Robinsons arrive with Gemma’s sister, Chloe, a mysterious young woman who refuses to speak or leave her room. Elliot starts to suspect that the Robinsons are hiding a dark secret. And then there are the scars on his wife’s body that she won’t talk about... From the two million copy bestselling author comes a tale about the chilling consequences of welcoming strangers into your home.