What is rivals book?

Rivals is a young adult fantasy novel written by Shannon Messenger. It is the ninth book in the popular Keeper of the Lost Cities series. The book continues the story of Sophie Foster and her friends as they navigate the complex world of elves, humans, and other magical creatures, facing challenges and uncovering secrets along the way. Key plot points often revolve around political intrigue, forbidden knowledge, and the struggle for peace between different species. A major theme is undoubtedly the concept of Friendship. Other important elements often touched upon are Identity and the difficult choices one must make to protect those they care about. The characters also explore ideas of Trust when faced with tough choices. Another important theme is the idea of Sacrifice and its impact on the characters' lives.