The third book in the instant New York Times bestselling series from Warriors author Erin Hunter finds cat sisters Luna and Willow torn apart by war—and racing to save each other before it's too late.

• THE FIRST PRINTING OF THE PAPERBACK FEATURES GORGEOUS STAINED EDGES!

Willow and Luna have come a long way since entering the world of magical animals and dangerous witches. But now they've landed in the center of growing tensions between the humans, the familiars they take for granted, and the animal covens.

As the fighting between witch factions escalates, Willow finds herself on the front lines with her human witch, Violet. While Willow wants to help restore peace, she can’t help but notice the humans’ indifference to the attuned animals who are bound to them—and the way they’ve all but abandoned the search for her sister, Luna. When the worst happens, she realizes that saving Luna is the only thing that matters—even if it means allying with those she once saw as enemies.

Captured by the notorious Rousseau witches, Luna is subject to the life she’s feared most ever since she learned about her magic—serving a witch. But with the rest of the city rising up against the Rousseaus, she may not have to resist their control alone.

Adrift in a constantly changing world of magic, witches, and power, the two cat sisters must fight for their freedom, and each other.