Something evil has taken over…  Lewis Barnavelt and his uncle are in England, visiting a cousin at Barnavelt Manor. Lewis quickly becomes friends with the housekeeper’s son, and as the two boys explore a garden maze, Lewis accidentally unleashes demonic forces that summon the ghost of an evil wizard bent on destroying his entire family.  Can Lewis fight the maniacal wizard, or will all the Barnavelts perish?   * “Chock-full of deliciously spooky details and narrated in a voice that is as cozy as it is ornery, this tale is utterly spellbinding.” —Publishers Weekly, starred review   “The well-devised plot and the spooky atmosphere will please the series' many fans as well as new readers who like their mystery stories scary.” —Booklist   “Satisfyingly hair-raising.” —Kirkus Reviews