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The third book in the middle-grade series that's part Scooby-Doo, part A Series of Unfortunate Events, and entirely genius! Follow the Sinister-Winterbottoms on their most outrageous adventure yet, when they find themselves at a normal summer camp!

The third book in the middle-grade series that's part Scooby-Doo, part A Series of Unfortunate Events, and entirely genius! Follow the Sinister-Winterbottoms on their most outrageous adventure yet, when they find themselves at a normal summer camp!

The third book in the middle-grade series that's part Scooby-Doo, part A Series of Unfortunate Events, and entirely genius! Follow the Sinister-Winterbottoms on their most outrageous adventure yet, when they find themselves at a normal summer camp!