It's 1985. A man is hunted down and killed by a woman assassin known as The Head Hunter. Sixteen years later, his body turns up and Detective Inspector Lorraine Hunt is called in to investigate. The day the body is found, Claire Lumsdon is the victim of a violent kidnap - the fourth in a series of abductions of young girls. For Claire and her sixteen-year-old sister Kerry, it's the beginning of a nightmare. Convinced the police can't help, Kerry sets out on a frantic search for her sister. But her hunt leads her to much more than she'd bargained for: a violent underworld; a sixteen year old murder; and, finally, the secrets about her past - and her father - which her mother hoped she'd never have to face. And all the time, the clock is ticking for Claire ...