Doubts have been cast on fingerprint evidence

Ms McKie was convicted but won an appeal with the help of an American fingerprint expert, who cast doubt on the accuracy of the fingerprinting techniques used by the Scottish Criminal Records Office (SCRO).

She was later completely exonerated by a Scottish Police Inspectorate report.

Four experts who gave evidence in her trial have since been suspended by the SCRO.

No date has yet been set for a full hearing of Asbury's appeal against his conviction for the murder.

Lawyers for Asbury believe that new expert analysis of a crucial fingerprint will lead to his conviction being overturned.

The 24-year-old joiner, from Kilbirnie, was jailed after a biscuit tin found in his house was alleged to have Miss Ross's print on it.

Fresh analysis carried out by Danish experts has now cast doubt on whether it was the deceased woman's print that was on the tin.

Asbury, supported by members of his family, had claimed that the biscuit tin had been in his home for three years.

 Click here to watch Finger of Suspicion, part of BBC Scotland's Frontline series.