Halley Harper: A Free Young Adult eBook

Halley Harper; Science Girl Extraordinaire: The Complete Series Box Set (Books 1-5) FREE by Tracy Borgmeyer: Join science-loving Halley Harper on five action-packed adventures filled with camp mysteries, friendship challenges, daring inventions, and an out-of-this-world finale! Blending real science experiments with lessons about growing up, the award-winning series inspires readers ages 8–12 to explore, experiment, and embrace their extraordinary selves.

This book is Free on November 6, 2026