Sir Gideon Blackwood travels to the remote Scottish Highlands at the request of Lady Margaret, the aging Duchess of Inverness, to help locate a priceless family heirloom rumored to be cursed. Upon arrival, he discovers that Lady Margaret herself has vanished, her room left in disarray, and an eerie silence hangs over the staff, steeped in superstition. As Blackwood investigates the mysterious disappearance, he uncovers chilling clues hidden in ancient murals and tapestries that hint at a curse rooted in Highland feuds and family secrets. The line between folklore and reality blurs as Blackwood races to uncover the truth before he, too, falls prey to the castle's haunting history.