When Bob Chappell vanished from his yacht in Hobart, suspicion quickly turned on his partner, Sue Neill-Fraser, an unassuming woman who soon found herself at the centre of one of Australia’s most controversial murder cases.

But behind the headlines lies a deeper story - one of forensic failure, investigative tunnel vision, and a conviction that may never have happened if all the available avenues had been investigated.

In this episode, former detective Colin McLaren unpacks the crucial DNA evidence, the overlooked clues on the yacht, and the questions raised by a mysterious yellow Ford.

This is a story about how forensics should work, and what happens when it doesn’t.

Note: Sue Neill-Fraser was found guilty by a Supreme Court jury; her appeal was dismissed, and a Coroner’s investigation, which reviewed all the available evidence, supported the findings of the criminal proceedings. Tasmania Police stand by the integrity and thoroughness of the investigation, and the efforts of the investigation team, including the forensic experts, and the prosecution of the case by the office of the DPP.

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