Following the death of her husband and unborn child, Charley Belington sells the family home and bravely starts life over again. On moving into a new flat, she is befriended by her landlady, Ella, who seems like the perfect friend and confidante.

But, unbeknown to Charley, Ella is fighting her own dark and dirty demons as the fallout from a horrific childhood sends her spiralling down into madness—and unspeakable obsessions.

As Ella’s mind splinters, her increasingly bizarre attentions make Charley uneasy. But with every step Charley tries to take to distance herself, Ella moves in a tightening lockstep with her, closer and closer and closer…

From the bestselling author of Taunting the Dead comes a raw, intense, relentless, and darkly claustrophobic psychological thriller that grabs you by the back of the neck and never lets you go.