"Mark Edwards always delivers! Taut, gripping, scary and original - a fabulous read!"-Robert Bryndza, #1 Wall Street Journal bestselling authorA 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...As Elliot's in-laws become more comfortable in his home, encroaching on all aspects of his life, it becomes clear that they have no intention of moving out. To protect Gemma, and their marriage, Elliot delves into the Robinsons' past. But is he prepared for the truth?From the two million copy bestselling author comes a tale about the chilling consequences of welcoming strangers into your home.