Poptropica book based on the island of the same name. It was released on August 1, 2013, about cryptids.
|“||When Annie Perkins learns of a million-dollar prize for finding proof of the existence of legendary monsters like Bigfoot and the Loch Ness Monster, it seems like the perfect way to save her family's restaurant. But as the competition heats up, Annie will have to deal with a different kind of monster -- a ruthless fortune hunter named Gretchen Grimlock!||”|
|—Poptropica Creator's Blog|