Behind the front door of Mr and Mrs Morgan's elegant Norwich townhouse, something is terribly wrong. Detective Sara Hirst pushes it open to find a scene of utter devastation. Furniture upended. Shattered china and torn papers strewn across the floor. And, amid it all, James Morgan himself. A frail old dementia sufferer, crying out for his wife. Where's Carole? Amateur actress Carole Morgan was out late last night, running lines with her castmates at the Rosegarden Theatre. James waited up for her for hours. But now he knows, she's never coming home. A stranger came calling in the night to tell James as much. A masked stranger, draped in a monk's habit. Now, James urges Sara to hunt for the person behind the mask, certain that the trail will lead straight to his missing wife.