The final Installment in the Shapes of Autumn series.
Zack left Autumn behind weeks ago to infiltrate the werewolf castle. Each day, he endures abuse from the vile werewolves, failing to learn anything that might help in overthrowing the cruel empire. Not only could his suffering be all for nothing, and his friends and family slaughtered, he may not even get to see the love of his life again.
Werewolves aren't known for their compassion, and Autumn worries Zack might be killed before she can get there with their small but fiercely determined army. As Autumn and others scramble to assemble a force that can withstand the werewolf king's unusual powers, Autumn has little hope any of them will survive. But never seeing Zack again would be an even worse fate.
Books in the Shapes of Autumn series:
Thrown to the Wolves: The Legend of Hannah and Eli (prequel)
My Wolf's Bane (book 1)
Wolves at the Door (book 2)
Dead Wolf Walking (book 3)
The Dark Wolf (book 4)
Lord of the Wolves (book 5)
A Witch in Time (Shapes of Autumn/Something Witchy crossover)