Bright siblings—and amateur inventors—Nick and Tesla Holt are back in this fourth installment of their whiz-bang middle-grade series. This time, the twins are out to save science itself, as they race against the clock to figure out why a robotic assortment of history’s greatest scientists and inventors keeps going haywire. Is this sabotage, robo-geddon…or something more sinister? To unravel the mystery, they’ll have to keep adding all-new gadgets to their cyborg glove as they stay one step ahead of a hidden adversary.

Together with zany scientist Uncle Newt and their friends Silas and DeMarco, Nick and Tesla won’t give up until an answer is found…but can they do it before time runs out? In this book, readers will learn how to construct a super-cyborg gadget glove that has four incredible functions: LED signal light, ultra-loud emergency alarm, handy sound recorder, and UV secret message revealer. Science and electronics have never been so much fun!

“SCIENCE BOB” PFLUGFELDER is an elementary school teacher based in Newton, Massachusetts. He has made many television appearances on Jimmy Kimmel Live, The Dr. Oz Show, and Live With Kelly & Michael, among other media outlets. These are his first books. STEVE HOCKENSMITH is a New York Times best-selling author and an Edgar Award nominee.