Trusting Daywalkers is dangerous. Crossing them could be to your detriment. Given the world she lives in, this is something agent Francesca Drake should have remembered before entering the den of the beasts. When bodies start piling up, she is ordered to probe the Daywalker Academy. In the urgency she forgets her mixed heritage, as well as the most important rule. Only the pure bloods are welcomed. Not everything is what it seems at this prestigious place. Their sinister plans threaten the lives of everyone she’s ever known. Unaware of the secrets within, she is thrown into a world of sinful temptation, leaving her perplexed about the truth. Can she trust the most dangerous of the beasts to protect her? Or will they both perish before her mission ends? The balance...a single drop of blood.