Title rated 4.25 out of 5 stars, based on 69 ratings(69 ratings)
Unknown, 2009
Current format, Unknown, 2009, 1st U.S. ed., No Longer Available.
Unknown, 2009
Current format, Unknown, 2009, 1st U.S. ed., No Longer Available. Offered in 0 more formats
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.
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