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"--

As Dovepaw, Jayfeather, and Lionblaze strive to understand and fulfill the prophecy that promises them great power, the cats of the Dark Forest begin to teach battle skills and techniques to different Clan cats through dreams.

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

"ThunderClan's leader, Bramblestar, has been behaving erratically after losing one of his nine lives, and suspicion is quickly spreading across Clan borders. And when a strange apparition sparks unrest in SkyClan and ShadowClan, each warrior must decide where their allegiances lie--with their Clan, or the warrior code itself"--

"As a leaderless RiverClan faces disaster, its warriors and its young medicine cat apprentice are determined to protect their Clan and find its new leader-even if it means lying to the other Clans"--