In January 1982, as most Australians enjoyed a carefree holiday season, Lyn Dawson was trying to pick up the tattered threads of her marriage. JC was taking tentative steps to extricate herself from her affair with Lyn's husband. And Chris Dawson was desperately seeking solutions. In this episode, a damning piece of evidence - once thought lost - is recovered, and it is something that should be vitally important to the Director of Public Prosecutions.