What happens to the dead when they die? It wasn't a question Olivia Brennan ever thought to ask. After all, once you've been to Hell and back, how much worse can things get? Her harrowing descent has already cost her everything-her home, her career, the man she loves. But when an enemy resurfaces looking to settle a score, she learns there's more to lose than she ever imagined. Purgatory harbors more secrets than the depths of Hell, and Olivia has landed smack dab in the middle of their tangled web. Faced with an impossible choice, she must reach into the darkest parts of her soul for the strength she needs to save everyone she loves. But even if she succeeds, will she ever be the same again? Maybe some questions are best left unanswered.