Kato Vorsok lost everything the day he was defeated at the gates of his enemy's stronghold. Deserted by his god, estranged from his people and living in exile, he wants nothing to do with his old life.

Until the night he encounters a wounded mourning cloak, a demon who can walk through walls and spear a man's heart with a fingernail.

She knows who he is. She speaks his dead wife's name. And she needs his help.

Kato failed once. Can he fight again—and win?