With a divided StarClan driving a treacherous rift between the four warrior Clans, the spirits of the Dark Forest are gaining strength. Ivypool's role as a spy becomes more dangerous with each passing day, and Dovewing is haunted by nightmares about the mountains.
Then an outsider appears in ThunderClan's midst, spreading discord and pushing the Clans farther apart. As tensions mount and Clanmates turn against one another, the warrior cats will be forced to choose whose word they can trust - before it's too late.
Erin Hunter is the pen name used by the several authors of the Warriors novel series and the Seekers novel series.
"Erin Hunter is inspired by a love of cats and a fascination with the ferocity of the natural world. As well as having a great respect for nature in all its forms, Erin enjoys creating rich mythical explanations for animal behavior, shaped by her interest in astrology and standing stones."