John Duggan had it all: married with a beautiful four-month-old daughter; manager with a career on the up; nice house in a good area of Southampton. His wife is cheating on him; his daughter's relentless screaming deprives them of sleep; he drinks too much. Unable to deal with the mounting pressure, he hires a private investigator to spy on his wife. But Johnson Carmichael has troubles of his own.

September 1989. Single mother Beth Roper is followed home and assaulted in her home while her four-year-old daughter, Lauren, sleeps. May 1993. Known offender Nathan Green is tried and sentenced for the brutal assault of two women and the murder of a third. November 2013. Lauren Roper hires Private Investigator Johnson Carmichael to prove that Nathan Green also assaulted her mother.

Christmas, 2014. Following an argument with her parents, 15-year-old Freya Coleman storms out of the house. In tears, she goes to meet the only person who understands her: Robbie, the nice guy she's been chatting to online. She doesn't return home. One year later, a teenager's body is found in a Southampton park. She is gaunt, bruised, and barely breathing. She is rushed to hospital, but has been so badly abused that doctors fear her fragmented memory may never recover.