It’s a double mystery when a robot and a hamster go missing before the science fair in the third book of this full-color early chapter book series about the best detectives in the Midwest!

Detective Tip #3: Use your imagination and stay calm!

When a classmate’s DIY robot goes missing right before the school Science Fair, Detective Wednesday Nadir and her service dog, Woof are sure they can find it…until the class hamster also disappears! Now the pressure is on! Can Wednesday and Woof use the scientific method to solve two cases at once—or will the stress cause a mess?

HarperChapters build confident readers one chapter at a time! With short, fast-paced books, art on every page, and milestone markers at the end of every chapter, they're the perfect next step for fans of I Can Read!