Three young inventors form a secret club to create gadgets and stop a villain in this vibrant graphic novel.
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Three young inventors form a secret club to create gadgets and stop a villain in this vibrant graphic novel.
Eleven-year-old Julian Calendar thought changing schools would mean leaving his "nerdy" persona behind, but instead he forms an alliance with fellow inventors Greta and Ben and works with them to prevent an adult from using one of their gadgets for nefarious purposes
will contain mild spoilers
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