Lord Byron is troubled. Is his new poem a catharsis of self-loathing at being attracted to other men or an incantation that turns him into an incubus that seeks such sins? Or perhaps something much worse: an apocalyptic prophecy. Present-day Professor Adam Fane is beginning to suffer from what he believes is dementia, which causes him to have the same visions Byron experienced centuries ago. A closeted gay man, Professor Fane interprets these visions...