On her eighteenth birthday, vampire hunter Wren Hathaway sees her home attacked and is surrendered by her father to Severin, the vampire king. Forced into marriage and bound to him by blood, she vows to escape and kill the monarch who devastated her people. Yet every attempt brings her back to a captor whose ruthless possessiveness is matched by his willingness to risk his life for her. As Wren learns of the hunters' role in destroying his family, hatred gives way to a love that defies everything she was raised to believe. Inside the castle, the jealous Viorica schemes to destroy their bond, poisoning Severin and framing Wren for the crime. Saving him may cost Wren her humanity, but the danger extends beyond the sickroom: a rebellious duke joins Viorica in a plot to seize the throne, using the queen as bait. Caught between her hunter's past and the king she now loves, Wren must decide how far she will go to save him as their enemies close in.
