Robert Arnett

"Meet Hattie Harmony, Worry Detective. She's always there to help her friends when they need her. And the first day of school can cause a lot of jitters--from speaking in front of the class to taking the bus. Hattie always finds the perfect tools to calm her friends' bodies and minds. But when her own fears start to bubble up, can Hattie learn to overcome them herself?" -- Provided by publisher.