Patrick Merrell wrote and (copiously) illustrated a 144-page storybook called Zep in the Curse of the Evil Dr. Sumac Who Lives Next Door. Zep is aimed at kids 7 and up—and at adults and teens who like crafty puzzles. “Part two is a super-tough puzzle hidden within the book’s pages. It’s intricate and devious, requiring finesse, logic, skill, and persistence — a puzzling challenge that will push crafty adults and brainiac teens to their limits.” Remember the challenge of finding the annual hidden puzzle in Games magazine? Imagine having a far more intricate puzzle lurking within those 144 pages, awaiting your cleverness. And there are prizes!

You can buy the book here for $11.95. Enjoy!