Messenger, Shannon, Keeper of The Lost Cities: Unlocked - New York : Aladdin, 2020. - 747 pages, 16 unnumbered pages of plates : illustrations (some color), color maps ; 22 cm. ISBN: 9781534463424 Subjects--Topical Terms: Ability--Juvenile fiction. Memory--Juvenile fiction.Psychic ability--Juvenile fiction. LC Class. No.: PZ7.M5494