Chris Dawson was interviewed by police in 1991, and then never again. But Sue Strath, Lyn's loyal friend, kept agitating for a further investigation, and in 1998 Detective Damian Loone was assigned to the case. Curiously, the earlier investigation notes had vanished.

After six difficult years, the volatile marriage was over. Joanne felt she had become ‘disposable’, as Lyn had been years before, and feared for her life. She fled back to Sydney, telling friends she was convinced Chris had murdered his first wife. In this episode, you'll hear what Chris Dawson told detectives when he was interviewed in 1991.

Chris and his family move homes.

Hopes fade for ever finding Lyn alive.

Chris takes a new step in his life.

Theories abound as to where Lyn might be.

Looking for answers to Lyn's disappearance.

Lyn goes missing.

Family and friends talk about life in Sydney's Northern Beaches.

Chris was a sports teacher at Cromer High School.

Lynette Dawson was a devoted wife and mother before she went missing.

A star footballer. His school girl lover. A wife who vanishes.  The Australian’s Hedley Thomas digs deep into a cold case which has been unsolved for 36 years, uncovering startling new evidence.