Ep 25. The Borrowed Book Mystery/The Missing Mystery Books

When Sally needs a specific book for a school report on trees, she finds it�۪s overdue at the Busytown Library and the Librarian can�۪t read who took the book out because of a mysterious green drip covering the name./The Busytown Bookshop is missing a new delivery of 'Molly Mystery' books. Huckle and his friends search unsuccessfully for the box marked with double 'M's.