D.J. MacHale is a writer, director, executive producer and creator of several popular television series and movies. His hugely popular 10—volume series, “Pendragon: Journal of an Adventure Through Time and Space,” was a New York Times No. 1 best-seller. MacHale has written extensively for television, including for the ABC Afterschool Specials, the Nickelodeon Series “Are You Afraid of the Dark?” and the Discovery Kids/NBC television series “Flight 29 Down.” His new book is “Sylo (The Sylo Chronicles)” (Razorbill/Penguin).