Revisit a groundbreaking sci-fi phenomenon with K A Applegate’s classic reissue. This pulse-pounding story introduces the terrifying Yeerk alien invasion book lore to a brand-new generation. Follow five ordinary teens who obtain a human animal morphing sci-fi technology to fight back in secret. Packed with 90s nostalgia kids series charm, this book combines body-horror suspense, ethical dilemmas, and high-stakes action into an unputdownable adventure classic.