from a colleague working on the Danish island of Bornholm. Carl is dismissive at first, but then he receives some shocking news. Carl then has no choice but to lead Department Q into the tragic cold case of a vivacious seventeen-year-old girl who vanished from school, only to be found dead hanging high up in a tree. The investigation will take them from the remote island of Bornholm to a hidden cult, where Carl and his assistants must stop a string of new murders by a skilled manipulator who refuses to let anything - or anyone - get in the way. For fans of Tim Weaver and Jo Nesbø.