Evangeline Sol crossed the Gate of Acheron with blood on her hands and death at her heels. Desperate to save her dying sister, Eva descends into the frozen Underworld to bargain with the one being mortals fear more than death itself — Acheron, the ancient God of Souls. Cold, merciless, and untouchable, he rules a kingdom of ash and silence where no living heart dares to beat. But the moment his gloved hand brushes her skin, everything begins to unravel. She does not turn to ash. Instead, the God of Death feels something he has not felt in ten thousand years: warmth.