The second book in the Greystone Secrets series from the master of plot twists, Margaret Peterson Haddix--perfect for fans of A Wrinkle in Time and The City of Ember This middle grade novel is an excellent choice for tween readers in grades 5 to 6, especially during homeschooling. It's a fun way to keep your child entertained and engaged while not in the classroom. Until their mother vanished, the...