Erin Morgenstern is the novelist behind the 2011 novel 'The Night Circus'. She is an American author who has written several books, including 'The Starless Sea' and 'The Starlit Wood'. Her debut novel, 'The Night Circus', was a New York Times bestseller and has been translated into over thirty languages. It tells the story of two magicians locked in a deadly competition at a mysterious circus that only appears at night.