Eachyear,theMidsomervillageofAngel'sRisehostsanannualPsychicFayreinthevastandgothicEddonHall.FoundedbytheSaint-Stephensfamilyinmemoryoftheirlatedaughter,theeventattractsallmannerofmediums,psychics,andfollowersoftheoccult.Whenabodyisfoundsurroundedbyritualsymbolsontheeveofthegathering,Barnabymuststepintoaworldofself-proclaimedwitchestofindthekiller.