The Lair of the White Worm (1911) is a horror novel by Bram Stoker, the author of Dracula. Set in rural Derbyshire, England, the story follows Adam Salton, a young Australian who arrives to reconnect with his great-uncle and becomes entangled in sinister mysteries. Lady Arabella March, an alluring widow living at Diana's Grove, is secretly a monstrous creature—the white worm—a giant, venomous serpent capable of taking human form. With the help of Sir Nathaniel de Salis, Adam uncovers her terrifying nature as she schemes to marry Edgar Caswall, a hypnotic aristocrat. A tale of ancient evil, mesmerism, and primal terror, the novel builds toward a climactic, explosive confrontation.