"With an impostor leading ThunderClan, threatening to exile any cats who challenge him, a small but growing group of cats must find a way to expose the truth and return ThunderClan's rightful leader--before the tensions among the Clans erupt into war"-- Provided by publisher.
Hunter, Erin. Warriors, the broken code ; bk. 3.
Warriors, the broken code
Warriors, the broken code ; 3
Cats -- Juvenile fiction.