Humiliated and broken by her husband's affair, Lyn finally asked JC to leave the Bayview home. The teenager walked out, and into the home of Chris's twin brother, Paul, a few hundred metres down the same street. Tensions continued to rise. And then suddenly, Lyn vanished. Years later, JC suggested Lyn's remains were buried at Bayview, in the 'soft soil' - outside what were her daughters' bedroom windows. In this episode, a surprise new witness speaks publicly for the first time about something he was told in 1987, indicating the possible whereabouts of a body.

<p>Humiliated and broken by her husband's affair, Lyn finally asked JC to leave the Bayview home. The teenager walked out, and into the home of Chris's twin brother, Paul, a few hundred metres down the same street. Tensions continued to rise. And then suddenly, Lyn vanished. Years later, JC suggested Lyn's remains were buried at Bayview, in the 'soft soil' - outside what were her daughters' bedroom windows. In this episode, a surprise new witness speaks publicly for the first time about something he was told in 1987, indicating the possible whereabouts of a body.</p>

The Australian's Hedley Thomas digs deep into a cold case which has been unsolved for 36 years, uncovering startling new evidence.

Lyn and Chris Dawson appear to have the perfect marriage. He's a star footballer and popular high school teacher. She's a devoted wife and mother. They share a beautiful home above Sydney's northern beaches. But when Lyn goes missing, dark secrets are buried. This is no fairytale, but a sordid story of strangely close twin brothers, teenage student lovers, and probable murder. The Australian's Hedley Thomas digs deep into a cold case which has been unsolved for 36 years, uncovering startling new evidence.

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