Angels. Demons. And the one man caught in between. In a world where demons and humans are at constant war, the delicate balance between destruction and salvation are monitored by elite factions of trained knights known as Garrisons. Nick Emberson is a soldier of the Glenhaven Garrison with high hopes of becoming a knight. On his eighteenth birthday he meets the mysterious and beautiful Quinn Valentine. Captivated by her fiery red hair and green eyes, he is compelled to know everything about her. But before their relationship can develop, he discovers that he possesses the soul of a bloodthirsty demon Things can't possibly get worse. But they do. Dangerous and powerful demons are bent on eliminating him before he can achieve his true purpose. And with threats of war looming and figures from the past that cannot hope to stay buried, finding love is the least of his worries.