Warriors: Mapleshade's Return.
In this story, infamous Mapleshade returns, sent by starclan, for a second chance. But Mapleshade is still thirsty for revenge, and is eager for a chance to destroy Thunderclan from within. Posing as a loner, she soon earns a place in her former clan, and eventually the trust and respect of her 'new clanmates'. But Jayfeather, finding a way to trigger his powers, walks in Mapleshade's dreams and finds out who she really is. He tells no one except Dovewing and Lionblaze, hoping to avoid widespread panic within the clan. Will they be able to stop Mapleshade's quest for vengeance and turn her around, or will Mapleshade rip apart her former clan, destroying the balance so carefully preserved for moons?