When you purchase the Library Bound mystery you will receive FREE online eBook access Carole Marsh Mystery Online eBooks are an easy, effective, and immediate way to read your favorite Carole Marsh Mystery on the go Each web-hosted Online eBook is filled with the same exact pages as the book, plus additional features like pages that "flip" with a fun sound as you read, a full chapter directory, full-screen and thumbnail viewing capabilities, and more These early chapter books are about three boys who know the importance of friendship and become known as the three amigos Join them on their adventures as they solve many mysteries and riddles. This new mystery incorporates history, geography, culture and more Fun activities, built-in book club and SAT words are in each book. All Carole Marsh Mysteries have been assigned Accelerated Reader reading levels, points and quiz numbers, Lexile Measures, Fountas & Pinnell levels and a Developmental Reading Assessment.