Darkness Within

Squirrelflight, ThunderClan's loyal deputy, has been exiled. A battle has just left all five Clans devastated, and she is cut off from the Clan she has served. She still holds a dangerous truth: the cat now leading ThunderClan wears Bramblestar's face but is not Bramblestar.

Her task is to learn who that cat is and expose the impostor. Tension between the Clans is close to breaking point, and a second battle is coming. If it arrives before she succeeds, Bramblestar may have no body left to return to, and it is far from certain that he will return at all.

The book is a fantasy adventure about warrior cats, told from inside the Clans' rivalries and loyalties. Its central question is whether the warrior code is worth a warrior's life, and the stakes rise as the Clans move toward open conflict.

It is the fourth of six books in the Broken Code arc, which is the seventh arc of the Warriors series. It follows Lost Stars, The Silent Thaw and Veil of Shadows, and the next book is The Place with No Stars.