An explosion rocks the Library of Doom, and one of the workers, a page, is missing. It will take two Librarians to find and rescue him. But the heroes are met with unexpected danger . . . the jewel-hungry Watch-Man, whose mighty weapon, the Topaz of Time, can turn his enemies and all around him into dust! This gripping mystery is followed up with discussion questions, writing prompts, and a glossary. Part of the Library of Doom: The Final Chapters series.