导演选择克制的艺术方式。现代技术为历史影像注入活力，全彩修复增强视觉体验，画面呈现提升观看维度。但影片不刻意突出技术，整体色调保持沉稳。整体处理注重人文关怀。色彩管理体现历史意识，声音设计追求简约表达。AmericanpsychologistJohnHoldenarrivesinLondontoparticipateinasymposiumaimingtoexposewitchcraftanddevil-worshipasafraud,withattentioncenteredonacultrunbyaJulianKarswell.Debarkinghisplane,Holdenlearnsthatthesymposiumleader,HenryHarrington,hassuddenlydiedandheisnowincharge.WhatonlytheaudienceknowsisthatHarringtonwasclearlykilledbyademon,apparentlysummonedbyKarswelltoavengehispersecution.DespiteboththreateningandcajolingbehaviorbyKarswell,Holdendeterminestoproceed,thoughtheonlycultmemberwillingtotalkabouthisexperiencesisinaprisonpsychiatricward,catatonicafterallegedlykillingyetanothercultmember.However,Harrington'sniece,Joanna,believes,basedonheruncle'snotes,thatKarswellmayindeedhavesomesatanicpowersderivedfromanancienttomeinanobscurelanguagewhichhehasbeenabletotranslate,andattemptstowarntheskepticHolden.Karswell'smotheralsoattemptstowarnHoldenoff.However,thethingwhichbeginstomostgettoHoldenaretheoccasional,butmounting,sensoryandmentaldisturbanceshebeginsexperiencingafteranencounterwithKarswell,andthediscoverythat,duringthisencounter,KarswellsecretlyslippedaslipofparchmentwithacurseinrunicsymbolsonitintoHolden'sbelongings,aparchmentidenticaltooneHarringtonrecordedhavinghadpassedtohiminasimilarmannershortlybeforehisdeath...[N.B.HoldenatnopointstaysattheKarswellestate].