{"product_id":"the-riddle-of-zorfendorf-castle","title":"The Riddle of Zorfendorf Castle","description":"With nearly 2 million books in print, this Little Apple series is H-O-T, hot. The SECRET is out -- DROON is the series that kids, parents, and teachers are talking about!\u003cbr\u003e \u003cbr\u003e There's only one passage between the Upper World and Droon -- the magical rainbow staircase. At least, that's what Eric and his friends have always believed. But now Ko and his beasts are attacking Zorfendorf Castle, a magical fortress that's hiding a huge secret: the Fifth River, another passage to the Upper World. Ko will do anything to get to the river -- and to the Upper World. And Eric, Julie, Neal, and Keeah will do anything to stop him!","brand":"OUATB","offers":[{"title":"Default Title","offer_id":48203873288447,"sku":"*R0049949*","price":1.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/5550\/7364\/files\/14425603482344.jpg?v=1771622176","url":"https:\/\/shop.onceuponatimebooks.com\/products\/the-riddle-of-zorfendorf-castle","provider":"Once Upon a Time Books AR","version":"1.0","type":"link"}