Book 4 in the all-new Science Adventures of Tom & Huck series! Tom Sawyer and Huckleberry Finn are back-in fast, funny, science-filled adventures for curious kids! When a blood moon rises over the Mississippi River, Huck is sure it's a sign: ghosts are on the prowl. And when Tom and Huck spot a mysterious canoe slipping through the fog, they suspect the return of someone terrible from their past-someone with unfinished business. What begins as a spooky hunch turns into a high-stakes chase, as the boys uncover a plot to blow up St. Petersburg¿ and face the explosive truth about courage, friendship, and the kind of person you choose to be. The adventure includes: Real science facts exploring lunar eclipses, light waves, and combustion Bonus activities to keep readers engaged and learning A smart, high-interest format-especially for boys ages 9-14 Perfect for fans of The Science Adventures of Tom & Huck movie, this fourth book in the series blends ghostly thrills with real science as Tom and Huck face their most dangerous mystery yet. Super Science Showcase Smart Adventures for Smart Kids.