Detective Sergeant Manon Bradshaw tries to sleep, the low murmuring of her police radio her only solace. Over the airwaves come reports of a missing woman – door ajar, keys and phone left behind, a spatter of blood on the kitchen floor. Manon knows the first 72 hours are critical: you find her, or you look for a body. And as soon as she sees a picture of Edith Hind, a Cambridge post-graduate from a well-connected family, she knows this case will be big.