After a scandal forces DI Kelly Porter out of the Met, she returns to her home turf in the Lake District. Crimes in the Cumbrian constabulary tend to be of the minor sort, but Kelly begins work on a cold case that shocked the local community - the abduction and brutal murder of ten-year-old Lottie Davies. Meanwhile, Kelly is also investigating two seemingly straightforward crimes: a case involving an illegal immigrant, and a robbery following the death of local businessman Colin Day. But evidence comes to light that reveals a web of criminal activity beyond anything Kelly imagined. Behind the veneer of sleepy, touristy towns lies a dark and dangerous underworld. As Kelly threatens to expose those with much to lose, she risks paying the ultimate price to get to the truth.