A shocking new thriller, packed with twists, from an outstanding new voice in fiction

Natalies in tears in her bedroom. Shes had a huge argument with her husband. Slowly, she realises shes already holding a knife.

Shes telling herself she doesnt want to do it. Not again.

Because Natalie has an awful secret. Sometimes, on her worst nights, she blacks out. She loses control.

What do you do when theres a killer in your house, and you think it might be you?