New York Times bestseller! Now a Netflix Series! ""Packs plenty of information into a high-flying adventure."" -School Library Journal ""Adventure, humor, and smart, likable characters make for a winning chapter book."" -Kirkus Reviews From the #1 New York Times bestselling team Andrea Beaty and David Roberts who created Ada Twist, Scientist and Iggy Peck, Architect comes a spirited story full of adventure, friendship, and science! This is a unique and exciting series of children's chapter books for children, parents, and teachers who want to make Stem (Science, Technology, Engineering, and Math) fun. In Ada Twist and the Perilous Pants, Ada must rely on her curious mind, her brave spirit, and her best pals Rosie Revere and Iggy Peck to solve a mystery in her own backyard. Ada Twist is full of questions. A scientist to her very core, Ada asks why again and again. One question always leads to another until she's off on a journey of discovery! When Rosie Revere's Uncle Ned gets a little carried away wearing his famous helium pants, it's up to Ada and friends to chase him down.