When Vampire-Demon Sam Kyllwood discovers he's the keeper of some mysterious circle, he laughs it off. When he finds out that his younger brother is supposed to fight to the death in said circle, he snaps right to furious. And that's before he starts uncontrollably making things explode —it turns out it's never too late to develop deadly new immortal abilities. But even those explosions are nothing compared to what happens when he tries to handle a very suspicious, brilliant and beyond sexy human female whose piercing eyes ignite a heat that rages deliciously outside even his unbreakable control...