Nick and Tesla and the Robot Army Rampage

Join twins Nick and Tesla as they build homemade robots and race to solve a mystery in this zany, action-packed middle grade adventure sequel by “Science Bob” Pflugfelder.
It’s up to Nick and Tesla to save the day–again! When a rash of robberies hits the town of Half Moon Bay, the two young sleuths head straight to their Uncle Newt’s science lab. They’ll have to build their very own battlebots, robo-bugs, and hoverbots to outsmart a criminal mastermind. Can Nick and Tesla crack the case before it's too late? 
Now in paperback, this second book in the popular Nick and Tesla series features laugh-out-loud jokes, fun illustrations, and five DIY science projects with step-by-step instructions for readers to try at home.