This followed an extraordinary move by the witness, Meaghan Vass, to recant sensational evidence provided to the court about the disappearance of Bob Chappell from his yacht in Sandy Bay in 2009.

Ms Vass told the Supreme Court on Monday she had boarded the boat with other men, including her boyfriend Sam Devine, on the evening of Australia Day 2009.

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She said the intention had been to rob the vessel, but an altercation had occurred when they were confronted by Mr Chappell.

She said violence had erupted between Mr Devine and Mr Chappell.

But on Tuesday under questioning from Director of Public Prosecutions Daryl Coates, Ms Vass said none of this had occurred.

She said she had never met Mr Chappell, never been to the Sandy Bay marina area, and had never been on a yacht before.

Ms Vass said two of the men she had named in Monday's hearing, Stephen Gleeson and Paul Roe, were not on the boat and she had been told to say that they were.

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She said she had been told to name the two men by a woman who cannot be named due to a suppression order by the court.

Ms Vass said the woman along with two other people had been pressuring her since 2016 to say she was on the boat with the men and that she would be protected from prosecution through a certificate of indemnity.

She agreed with Mr Coates that the woman had threatened to put her in the boot if she didn't follow through with the story.

Ms Vass said she believed the woman was receiving a financial benefit from the plan.

Neill-Fraser's lawyer Robert Richter said the evidence from Ms Vass could no longer support a motion of fresh and compelling evidence leading to a miscarriage of justice.

"That leaves us in the situation where Ms Vass can be excused from giving further evidence," he said.