DC Callum MacGregor s career was going pretty well until he covered up for a cock-up to protect his pregnant crime-scene tech girlfriend. Now Callum's stuck on a squad with all the other misfits - the officers no one else wants but who can't be fired. Never likely to get within reach of a decent case again. Until they accidentally get handed the biggest murder investigation Oldcastle has ever seen. When a mummified body is found in the local rubbish dump, the top-brass assume pranksters have stolen it from a museum. But as Callum and his colleagues investigate, it starts to look less like student high-jinks and more like the work of a terrifying serial killer.