Join HARRY POTTER™ and other first-year students on their inaugural trip across Black Lake to the Hogwarts™ Castle, with this glow-in-the-dark lock and key diary. Turn out the lights and watch the castle windows, torches, moon and more glow! Featuring delightful illustrations from the acclaimed book Harry Potter™: Exploring Hogwarts, illustrated by Studio Muti, this diary includes 192 pages and a lock and two keys to keep your thoughts secure from even the most powerful witches and wizards.