1800 – Three years after she escaped to London with her bisexual lovers, Vaughan, Marquis of Pennerley and Viscount Lucerne Marlinscar, Bella Rushdale wakes to find Vaughan missing and their decadent ménage a trois in ruins. Determined to reclaim Vaughan and repair the damage, Bella pursues him to his family seat on the Welsh Border, where she finds herself embroiled in his preparations for a diabolical gothic celebration on All Hallows Eve – a phantasmagoria. Here, amidst the shadows and phantoms, Bella and her lovers peel away the deceits and desires of past and future to expose the heart of their volatile relationship and what they truly mean to one another.