Missing persons expert Diane Rowe is used to making sense of other people's lives. It's just a pity she's not having much luck with her own. The brutal murder of her little sister, Niki, and the break-up of her marriage have tested her usual tough optimism. When Niki's killer turns up dead, Diane is determined to nail the truth, despite the best efforts of her policeman ex-husband to sideline her. But uncovering Niki's seedy past reveals truths and dangers she never expected - or wanted - to face. Diane is determined to make sense of it all - whatever it takes.

Ex-con Karen needs Diane′s help to track down her fourteen-year-old daughter, Sunny, who she′s lost contact with while she′s been in prison. To Diane, this appears at first glance to be a simple case of a mother wanting to reunite with a beloved daughter. But she soon learns that while Sunny miraculously survived her mother′s attempt to kill her, little brother Oliver was not so lucky. Tracking the girl down is easy. However, convincing her to meet the woman who tried to kill her is no easy task. And at the back of Diane′s mind is a nagging thought - that guilt and innocence aren′t straightforward and nothing is quite what it seems. Does Karen really want to fix the wrongs of the past or is there something darker at play here that will take all of Diane′s skills to uncover?