Izzy Newton and the S.M.A.R.T. Squad: The Law of Cavities (Book 3)

VALERIE TRIPP is the co-creator of the American Girl book series that includes titles featuring Felicity, Josefina, Kit, Maryellen, Molly, and Samantha. Tripp also wrote American Girl's WellieWishers titles, Hopscotch Hill School titles, numerous leveled readers, songs, stories, skills book pages, and plays for educational publishers. Tripp is writer and editorial director of the Boys Camp series, and a writer, editor, and art editor for Sterling Publishing Company. Tripp received a B.A. and honors as a member of the first co-educated class at Yale University and a master's of education degree from Harvard University.

Author's Hometown: Washington, D.C.

MILLIE LIU was born in sunny Pasadena, California, and has been drawing ever since she could hold a pencil. It did start with color pencils on walls but after some scolding, she decided paper was much better. She graduated from Otis College of Art and Design and went into the field of toy design shortly after, designing colorful toys for children the world over. Her favorite subject to draw is story-driven fantastical locations with a touch of magic. When not drawing, she loves to read, experiment with cooking, and keep up with her fierce, growing collection of house plants. She also makes a conscious effort to buy secondhand or used products, and tries to reduce her use of single-use plastic.