The spartans wage fierce wars—but nothing matches the battle within their hearts...Spartan slave River Kassandros can transform into any weapon. After a bloody battle he’s forever a dagger—until a mortal can release him. Drawn to this blade, Emma Lowery draws blood with it and frees River. But even as they fight off intense passions, a sinister power arises to destroy them. To protect humankind, they may have to make the ultimate sacrifice—and lose their chance at love...