Shannon Messenger

Shannon Messenger is an American author. She is known for writing the middle-grade series ''Keeper of the Lost Cities'', which was a ''New York Times'' bestseller; ''Unlocked'', book 8.5 in the series, reached number 8 on ''USA Today''s list in 2020. She also wrote the young-adult ''Sky Fall'' series. Her books have been published by Simon & Schuster. Provided by Wikipedia