A darkness only a deal with Death can defeat.
War-weary Bran is summoned home from the battlefield to find his clan in turmoil. Their chieftain is dead, and his mother soon will be. Something attacked them in the night, but what? The clan whispers of wolves, but Bran's mother insists it was something far more sinister than that. With her last breath, she begs him to ride to the Crossroads and seek the counsel of their High Priest. There, Bran quickly discovers he cannot defeat this threat alone. He joins forces with the chieftains of their sister clans to solve the mystery, but it will be a fiery prophetess, her strangely-gifted stable boy, and a mute, mysterious selkie who will become his strongest allies in this supernatural fight. The architect of their nightly battles operates from the shadows, forcing Bran to navigate several realms that test his courage, but none as deeply as the Underworld. Desperate to save his people, he makes a pact with Arawn, God of Death, with chilling consequences he will never be free of. Fate weaves everyone tightly together as they struggle to defeat the mistress of their nocturnal enemies, who patiently pulls all of them into the seductive maelstrom of her power.