A deadly disease threatens every cat in the forest in this fourth book in the Dawn of the Clans prequel arc from mega-bestselling author Erin Hunter.

In the aftermath of the first great battle, the grounds of the four trees have been stained with blood and every cat has lost denmates and kin. Each group has sworn to a truce, but simply keeping the peace may not guarantee the cats' survival. A mysterious, deadly disease threatens to strike deep into the heart of both camps. Only one thing can save them: they must seek the Blazing Star....

Discover the origins of the warrior Clans in this thrilling and richly developed prequel arc. Featuring a new cast of characters and a never-before-seen look at the history of the warrior cats, the Dawn of the Clans arc is perfect for existing fans and for those new to the Warriors world. With more than fourteen million copies sold and each new title hitting the New York Times bestseller list, the Warriors series has been flying off the shelves for ten years and counting.