Keeper of the Lost Cities: Unlocked

This is the 8.5th installment in Shannon Messenger's popular fantasy series, serving as a guide and companion book rather than a traditional novel. The book provides character profiles, world-building details, maps, and behind-the-scenes information about the Lost Cities universe where Sophie Foster, a telepathic girl, navigates a hidden world of elves. The series features diverse characters and explores themes of identity, belonging, friendship, and finding one's place in the world while dealing with complex political intrigue and magical abilities.