Mo hayder - poppet (Random House UK Ltd)

In the Beechway High Secure Unit, a hallucination can spread amongst the mentally ill patients like a virus. When power cuts lead to a series of horrifying incidents, fear spreads to the staff. A senior psychiatric nurse seeks help from Detective Inspector Jack Caffery, but both men find they must face a bitter truth before staring pure evil in the eye. This is Mo Hayder at her most terrifying.