Anthony Monday takes a vacation to another world in this mind-blowing mystery from the author of The Lamp from the Warlock's Tomb . Summer is here and Anthony Monday has been asked to join his friend Miss Eells and her brother Emerson on a vacation to northern Canada, where Emerson owns a no-frills cottage on an island. School may be out, but there's still a riddle to be solved: A few years ago, three tourists visiting the cottage disappeared without a trace . . . The cottage has no electricity, but it's humming with strange sounds and illusions. Before long, Anthony finds a disappearing chest that turns out to be a portal to another world—a realm populated by evil human-like creatures who want to drag Earth and its inhabitants into their dimension. As Anthony, Miss Eells, and Emerson try to come up with a plan to save the world, they are faced with their own intruder: a visitor from the other side with vengeance on his mind . . . "The atmosphere throughout this adventuresome chiller is appropriately scary and the villains are certainly evil personified." — School Library Journal "Bellairs's characters have a captivating charm that adds to this spellbinding adventure." — VOYA "Throwing in plenty of conventional ingredients (ghosts, illusions, cryptic clues, secret passages, magic amulets, a witches' sabbath, cliffhangers, last-instant rescues, etc.), Bellairs dishes up a broth spiced with action [and] suspense." — Kirkus Reviews "While the notion of passage into another world is not new, the late Bellairs provides unique twists." — Publishers Weekly