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.

It's been quite a week for Joe Grey. First the large, powerfulfeline discovers that, through some strange, inexplicable phenomenon, he now has the ability to understand human language. Then he discovers he can speak it as well! It's a nightmare for a cat who'd prefer to sleep the day away carefree, but Joe can handle it. That is, until he has the misfortune to witness a murder in the alley behind Jolly's Deli — and worse, to be seen witnessing

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The warrior cat Fireheart's determination to uncover the truth about another warrior's death leads him deep into danger, and reveals secrets that test the strength of clan loyalties.

Moons have passed since six cats set out on a journey to save their Clans. Meanwhile, back in the forest, Firestar and Leafpaw watch ThunderClan's world crumbling around them. Will the questing cats make it back in time, or will they be too late?

Firestar's grandchildren--Lionpaw, Hollypaw, and Jaypaw--progress in their training to become warrior cats and are drawn for different reasons to the mountains and the Tribe of Rushing Water.

Amidst ongoing strife within and between the Clans of warrior cats, Brambleclaw is tempted by the dark plans of his father and brother, and the meaning of Leafpool's ominous visions becomes clear.

Leafstar struggles to maintain control of her Clan as she figures out how Skyclan can survive in the gorge.

After moons of division and strife, the ShadowClan is in danger of falling apart.

When Firestar's grandchildren, Hollyleaf, Lionblaze, and Jayfeather, finally discover who their true parents are, there are dire consequences for ThunderClan and the Warrior Code.

When a controversial mask maker is found dead in the co-op basement, librarian Kathleen Paulson, along with her feline companions, questions whether the death was accidental and joins handsome detective Marcus Gordon in his search for a killer.