Robbie Coltrane's new series features the Suzanne Pilley case and say that the cadaver dog alerts were critical evidence.
"The dogs provide the evidence and gave support that Suzanne had been murdered." "They are a remarkable tool." "Where the car boot was situated in the garage, the dog gave an alert at that spot." Now the investigation focused on David Gilroy. Detective Chief Inspector Gary Flannigan
from "Robbie Coltrane's Critical Evidence" Series 2 Episode 8 "Into Thin Air"
"The cadaver dog provided critical evidence."
In my opinion the indications provided by the cadaver dog in areas where it is likely Suzanne Pilley's remains had lain for some time, reinforced compelling evidence of CCTV footage/phone pings which proved that David Gilroy's apparently hastily arranged work related car journey had taken longer than necessary and had included evidence of off-road activity.
I think the dog indications assisted police to form an opinion about what may have been part of the sequence of events in Suzanne's disappearance ... but they were not stand alone evidence ... Gilroy was convicted as a result of an accumulation of evidence, including having a motive before the event and as a result of his actions afterwards.
Unfortunately the CCTV footage of Suzanne outside her workplace did not actually record her entering the building but obviously the jury were of the opinion the police had gathered enough evidence for them to return a guilty verdict.
SnipGilroy's mistake was to underestimate the huge electronic footprint that became a compelling body of evidence.
After analysing CCTV evidence, police had recreated a journey he made to Argyll and back three times.
They discovered Mr Gilroy had taken two hours longer than their average time each way.
And a comparison of fuel consumption suggested there were 124 miles unaccounted for.
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Colleagues described him as seeming clammy, sweaty and with scratches on his neck and face. But he got his act together.
He made an excuse to go home and collect the car. He bought air freshners in Superdrug on Princes Street.
He used make-up to cover scratch marks on his hands.
He adjusted his diary to give him a reason to go to Argyll the following day.
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As the court prosecution pointed out, Mr Gilroy, who was the one person with intimate knowledge of Ms Pilley, had gone on a journey of "no importance" the day after she had disappeared instead of "assisting the police inquiry".
He returned home that night and spent the evening with his family, all the time Ms Pilley's body was in the boot of his car.
He had made a journey to Lochgilphead, to check on a school his firm was overseeing.
However, he did not take a direct route and instead headed much further north.
He was logged at Tyndrum at 13:22, then Inveraray at 15:51 before arriving at Lochgilphead at 16:26.
Gilroy's car suspension was found by investigators to be badly damaged and it had vegetation stuck underneath.
They were convinced he had driven off road.
Detectives were certain he had detoured along the A83 to somewhere near the beauty spot, Rest and Be Thankful, with enough time to dispose of Ms Pilley's body.
A targeted, intensive search was organised for a weekend in August. The terrain was tough and ultimately Ms Pilley's body was not found.
http://www.bbc.co.uk/news/uk-scotland-edinburgh-east-fife-17358340