Frontline Scotland - Arlene Fraser Murder Trial: the Missing Evidence, Wednesday 19 October 2005, 7.00pm, BBC ONE Scotland
Frontline Scotland will tonight highlight alleged flaws in the Arlene Fraser murder trial.
Arlene Fraser disappeared from her home in Elgin in 1998 and her case became one of Scotland's most notorious murder mysteries.
After a five year long police investigation her husband Nat Fraser was finally jailed for her murder in January 2003 after his long-time friend Hector Dick turned Queen's Evidence.
Now evidence uncovered by the BBC Scotland documentary (7.00pm, BBC ONE Scotland) could lead to the release of Nat Fraser.
Dick had been co-accused with Nat Fraser but the charges against him were dropped when he agreed to become the prosecution's star witness.
But Frontline Scotland's investigation will reveal evidence which casts doubt on Dick's testimony in court relating to the disposal of a car he bought for Nat Fraser.
Dick claimed he had panicked when the car had re-appeared at his farm shortly after Arlene had disappeared.
He said he flattened the car and took it, with some steel, to Williamson's scrapyard in Elgin.
But Douglas Williamson, the scrapyard owner, tells Frontline Scotland that the car was never taken to his scrapyard.
He also says the steel was returned two years before Arlene's disappearance in 1998, and produces the paperwork from the transaction.
The murder trial ended without the jury having heard Mr Williamson's evidence. He could have verified or challenged Dick's testimony.
He was on the witness list during the trial but was told by the prosecution team that his testimony was no longer required.
Dick, who was previously jailed in 1999 for perverting the course of justice, stuck to his version of events when confronted by Frontline Scotland.
Although he claimed he could prove he was now telling the truth, he refused to show Frontline Scotland the papers which, he says, support his story.
Frontline Scotland also reports the damning verdict of a lip reading expert on a crucial part of the police investigation.
The investigation was boosted when forensic lip reader Jessica Rees produced an incriminating report from CCTV footage of a conversation between Nat Fraser and his friend Glenn Lucas during a prison visit.
At that time, two years after Arlene had disappeared, her husband was in jail for defrauding legal aid.
Jessica Rees' report convinced Grampian Police that the men had been discussing the murder of Arlene Fraser.
It was this evidence that led to Nat Fraser being charged with murder, according to Detective Superintendent Jim Stephen, Grampian Police's senior investigating officer on the case.
Other lip reading experts, including Terry Ruane, studied the tape.
He tells Frontline Scotland that when he checked the report he could not match any of the key words which Jessica Rees had put in her report.
The defence were ready with an attempt to discredit the lip reading evidence if it was called in court.
Jessica Rees has been dropped by the Crown Prosecution Service in England after allegations she had misled people about her university qualifications.
Hector Dick could now be charged with perjury for lying during the murder trial.
Nat Fraser has launched an appeal against his conviction.
With this new allegation that Dick lied in court the appeal court judges could decide that his conviction be squashed.