Super-smart kid inventors Nick and Tesla Holt have outsmarted crooks, spies, and kidnappers, but now it's time to crack their biggest mystery yet: where the heck are their parents? With the help of their eccentric Uncle Newt, the twins trace the clues to their missing Mom and Dad, scientists working on solar-power research for a clandestine government project. They'll need all their wits, along with an assortment of homemade gadgets, to outsmart the criminal mastermind who's trying to turn solar power into a secret weapon. Featuring instructions for building and using five awesome solar-powered contraptions-a hot dog cooker, alarm bell, listening device, model car, and nighttime LED signal cannon-this sixth installment is sure to please budding scientists and sleuthers alike.
- ISBN10 1594748667
- ISBN13 9781594748660
- Publish Date 10 May 2016
- Publish Status Active
- Publish Country US
- Imprint Quirk Books
- Format Hardcover
- Pages 264
- Language English
- URL https://penguinrandomhouse.com/books/isbn/9781594748660