If you thought you knew the story of The Teacher's Pet, get ready to be shocked. Hedley Thomas takes you behind the scenes with a blow-by-blow account of one of the most intriguing and enduring murder mysteries of our time - the crime, the podcast investigation, the sexual exploitation of teenage students, the courtroom drama - and how justice was finally delivered.

This is a heart-wrenching collection of true stories told through the eyes of family members who have experienced the trauma of a missing loved one. It follows their journeys from the desperate searches in the first days, through the Police investigations and, in many cases, the heartbreak as the years roll by without any news. These stories are just a glimpse into ten of the thousands of missing persons still out there, waiting to be found.

Teacher and former rugby league player Chris Dawson appeared to have it all - a loving family and a beautiful home in Sydney's Northern Beaches. But in the summer of 1982 his wife Lynette disappeared and not long afterwards Dawson married a much younger woman, a former student. Less than a decade later this young woman escaped the marriage and went to the police to record her suspicions that Dawson had been involved in Lynette's disappearance. A homicide investigation followed but got nowhere until 1998, when Detective Sergeant Damian Loone was handed Lynette's file.

Dorothy Davis and Kerry Whelan were both happy, healthy, affluent, middle-class women from conservative, loving families. Such women are hardly ever among the ranks of the missing. They were not hitchhikers, or associates of drug dealers, or unhappy with their family relationships, or suffering from mental health issues. Dorothy Davis and Kerry Whelan came from different parts of Sydney, mixed in quite different circles, and led completely different lives.

When she was four years old, Shanelle Dawson's mother, Lynette, disappeared. On 8 January 1982, the woman who had been a loving, constant presence vanished without a trace. Four year old's might not be able to articulate questions or understand a lot, but the ache of absence is very real. Year after year that ache persisted. Shanelle's father, Chris Dawson, claimed that his wife just needed to get away. This is what he told Lyn's parents and siblings. This is what he told his daughters. But Lyn never returned home.