For Brielle Brooks' whole life, it's been just her and her mom Safron against the world. A world where suddenly, supernatural bad guys started coming out of the woodwork - but so did her dad, the one and only BLADE! And while he's been training Brielle to hunt vampires and control her Dhampir bloodlust, he and Safron have now been captured by an ancient foe. Can BLOODLINE save them…before her family is ripped apart?