Eventually the BBC paid for Pat Wertheim to fly to Scotland to do it.

BBC: Fingerprint evidence challenged

Wertheim and British expert Allan Bayle looked at the print and agreed it definitely belonged to Alan.

BBC: Fingerprint evidence is fallible

Just weeks before her trial, Shirley came across a specialist in fingerprint fabrication in the US called Pat Wertheim.

BBC: Fingerprint evidence challenged

But Pat Wertheim and another US expert demonstrated to the jury that the mark couldn't possibly have been left by Shirley McKie.

BBC: Fingerprint evidence challenged

The opinions expressed in this commentary are solely those of Jon Wertheim.

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When Pat Wertheim analysed the evidence along with Allan Bayle, a fingerprint expert formerly of New Scotland Yard, they both came to the same shocking conclusion.

BBC: Fingerprint evidence challenged

"The climate has to be right, the distance not too far, the commuter's health not an issue, a lack of fast, simple, reliable and safe public transportation needs to exist, " Joshua Wertheim said.

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His years of experience and building connections has helped him put together an impressive list of panelists including Matt Bourne (VP of Business PR at Major League Baseball), former NBA athlete Brian Grant, Sports Illustrated Executive Editor Jon Wertheim and Iron Chef Beau Macmillan.

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