Pura Belpr Honor-winning author David Bowles joins Newbery Honor-winning Adam Gidwitz as co-author of the newest Unicorn Rescue Society adventure, as the kids travel to the U.S.-Mexican border to help the legendary chupacabras. Elliot and Uchenna have only just returned from their most recent Unicorn Rescue Society mission when Professor Fauna whisks them away (Jersey, too ), on their next exciting adventure. This time, they're headed...