Vampires. Evil, bloodsucking creatures of the night. Esperanza is a vampire slayer, that is her job. Obey, kill, get paid. That was all she knew until she met him. In a twist of events, she decides to train this vile monster, in the hopes of calming the calamity between both worlds... And to give herself less vampires to slay for the sake of living a normal teenage life. Trying to control a mindless, impulse-acting demon was already impossible. But love? Esperanza had never considered plausible.
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.