"What's done in the dark will be brought to the light."
With her undead fiancée Cole at her side, Mia's working her dream job. She's successfully protected humans and arrested paranormals. It should be the best time of her life. But a secret lingers, and restless spirits threaten to wedge between her and her vampire.
As if that wasn't enough, the secret brings a darkness not even Sector 13 is aware of. Old wounds bleed as the past comes back to haunt Mia and her mom. When the darkness starts to spread, it threatens more than the Sector 13 district, and they soon realize they're in the fight of their lives to not only save the world but Mia's soul.