Onaleaveofabsencefromthe oliceforce,LutherislayinglowinarundowncottageontheedgeofEnglandbutavisitfromhisoldcolleaguesattheMetbringsashocking ieceofnewsthatdrawshimbacktoLondoninsearchofthetruth.Meanwhile,agruesomeserialkillerhasstruckthecity.Withatrailofcluesleadingfromonecrimescenetothenext,Schenkandhisteammustworkoutthetwistedlogicthatconnectseachvictimbutthismurderingmastermindismorethanamatchforthe olice,outsmartingthemateveryste .It’snotlongbeforeLutherisbackintheBull en,determinedtostealamarchonthekillerbeforeit’stoolate