B在院坝中惬意地打着滚，它在雨水里忘情洗澡。一个驼背老头儿，在屋檐下双手捧起清亮亮的雨水接连送入嘴中ritain’smostnotoriousserialkiller,DennisNilsen,confessedtokilling15peoplein1983.Overafive-yearperiod,hepickedupvulnerableyoungmen,luredthembacktohishomeandstrangledthem,beforedisposingoftheirbodiesunderthefloorboards.Thetruthabouthowandwhyhekilledhasbeenthesubjectofmuchspeculationinbooksanddocumentariesoverthedecadessince.Now,withuniqueaccesstoawealthofpersonalarchiveleftinhiscellafterhisdeath,includingover250hoursofnever-before-publishedcassettetapesofhisprivaterecordings,thisfilmwilltakeusintoNilsen’sworld.FromayoungboygrowingupinaquietScottishfishingvillagetoacold-bloodedmurdererprowlingthestreetsofLondon.Setagainstthebackdropof1980sBritain,whenmassunemploymentdrewyoungmentoLondoninsearchoftheirfortunes,onlytofindthemselvesdestituteandeasyprey,andweavingtogetherinterviewsfrompolice,journalists,survivors,bereavedfamilies,and-forthefirsttime-thekiller’sownvoice,thisfeaturelengthdocumentaryexploreshowNilsenwasabletogetawaywithmultiplemurdersandattacks,unchallenged,forfiveyears.