Thanatos, god of death, has a mission: scour the unknown realms of the Underworld and retrieve the only daughter of his god-king, Hades. Murdered six centuries ago and her soul captured before it could pass on, she now falls under Thanatos's domain. Armed with only a description of the location of her prison seen in a vision by her oldest brother, Thanatos has spent four years hunting for her, determined to complete his task and save her. But when...