Nick and Tesla use an assortment of homemade gadgets to search for their missing scientist parents and outwit a criminal mastermind who wants to use solar power as a weapon, in a tale that shares instructions for creating four solar-powered items at home, including an alarm, a listening device, a model car and a hot dog cooker. Simultaneous eBook.
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.