When the nation first met Georgia author Cassie Beasley , it was in 2015 with the release of her debut novel, " Circus Mirandus ." It went on to become a New York Times bestseller. Beasley’s books are targeted to middle schoolers, but the appeal of her storytelling is widespread. We talked with Beasley about her follow-up novel set in the Okefenokee Swamp, “ Tumble and Blue .”