A deadly bargain.
A treacherous heart.
A Soul Collector thrown into the events of a coming war.
After the tragedy in Cordovia, Esme is determined to avenge her family. To do this, she must venture into the Realm of Souls - the demon world ruled by the God of Death - to kill the wicked prince. And Aiden intends to take her there. With their souls bound together, Esme discovers even more harsh truths. No one can be trusted. Because the longer Esme resides in the demon realm, the clearer it becomes that nothing is what it seems. Even Aiden, her one time ally, is still keeping secrets. And soon Esme finds herself trapped between Aiden, the cruel God of Death, and a force possibly even more dangerous-Ephraim, the Angel of Life.
Faced with the desire for vengeance, a desperation to rid herself of this dark power, and conflicting riddles about her future, Esme's fight continues amid deadly plots and unthinkable betrayals that will test her strength - and her heart.