John "Hawk" Blackhawk, vampire and private detective, is asked by his friend, Quinn Buchanan, to investigate a woman he has caught attempting to hack into his private computer files. They have to find out who this woman is. Could she be a spy sent to betray the brothers? Claire Landry is desperate. Twelve months ago, she and her younger sister were attacked by monsters. They turned her into one of them. She escaped, but they took her sister Cassidy to sell as a bloodslave. Since that night, she has searched for Cassidy without any luck. Now at last she has a real lead. She has learned that Ty and Quinn Buchanan rescued a group of bloodslaves, and Cassidy could be one of them. Determined to find her sister, Claire will let nothing, not even her thirst for Hawk, stop her from rescuing the only family she has left.