Knight of Gehenna (Hellsong) (Volume 2)

They had failed. No one, not even the warrior Galen, had expected the Carrion labyrinth to be so full of devils. No one had expected Maab’s soldiers to be so ferocious. They’d failed to rescue Julian, they’d failed to recover his food supply, and they’d failed to return before their own people, giving them up for dead, built a stone wall across the Carrion’s only known exit. Now all they can do is try to fight their way home—but they can’t make it alone. With half their number already slain, Arturus, Galen, and the Harpsborough hunters must either make an alliance with one of the Carrion’s darkest powers or give up any hope of seeing home ever again.