It's a quiet morning in the library—until a little girl roars out of control! Tess resigns herself to a time-out, but finds that she is the one who has to maintain order when a T. rex leaps from the pages of a book into real life. Books scatter, knights clatter, and a pirate brandishes a sword as T. rex leads the charge to the stars. Will Tess be able to get this dino under control? And will the library ever be the same? Catchy text and energetic illustrations will make young readers eager to discover what happens next.