Erin Hunter

Fireheart, a full-fledged warrior cat, must confront questions of loyalty and identity as he faces the possibility of betrayal from within his own forest clan. Fireheart is a ThunderClan warrior now, but his troubles are far from over. The cats of the RiverClan are growing restless, while WindClan is weak and facing threats from all sides. Fireheart faces imminent battle-- but doesn't realize he also faces betrayal from within his own Clan. -- adapted...

Three young bears of different species - one black, one polar and one grizzly - travel on a perilous quest to the Northern Lights, escorting a shape-shifting grizzly cub whose destiny will affect them all.

When the bears learn of the legendary Last Great Wilderness, a fabled bear paradise, they believe that this must be their ultimate destination.

"In the midst of the coldest leaf-bare any warrior can remember, the Clans have lost their connection with their warrior ancestors, and only one ShadowClan apprentice can still hear their voices--or their warning about the new shadow rising within the warrior Clans"--

Fireheart, the warrior cat, faces many challenges in his new role of ThunderClan deputy as his apprentice, Cloudpaw, resists following the warrior code, Bluestar weakens, and Tigerclaw continues to haunt the forest seeking revenge.

"Exiled after a battle that left all five Clans devastated, ThunderClan's deputy, Squirrelflight, reveals the identity of the fake Bramblestar and fights for the return of the real one"--

Tigerclaw is back and more dangerous than ever as the new leader of ShadowClan, but he is not the most terrifying enemy Fireheart must face as a new force sweeps through the woods.

"With RiverClan in crisis, ShadowClan and its leader Tigerstar step in to offer their help-whether RiverClan wants it or not"--

"The imposter walking in Bramblestar's pawsteps retreats to the Dark Forest, where the other Clans must follow if they hope to restore their connection with their ancestors in StarClan"--

As Hollypaw, Lionpaw, and Jaypaw, grandchildren of the legendary Firestar, continue their training to be warrior cats, each is haunted by a different internal struggle that could lead to trouble for all Clans.