If Grime says you need a cadaver to corroborate a cadaver dog alert I wonder what Martin Grime meant when he said: "It is my view that it is possible that the EVRD is alerting to cadaver scent contamination. No evidential or intelligence reliability can be made from this alert unless it can be confirmed with corroborating evidence."
http://www.mccannpjfiles.co.uk/PJ/MARTIN_GRIMES.htm
That seems like a Catch 22 situation.
As I see it ... there has to be evidence of some kind that a dead body has been present at the scene of an alert then the police have to find out who that person might have been,
In the Shannon Matthew's case ... the dogs alerted ... and investigation revealed that furniture which had been in the locale was later passed on to others complete with the contaminating scent.
In the Suzanne Pilley murder, although there was evidence of contamination in areas where the dog alerted, it could not be proved that it had been contributed by anyone (not necessarily dead ... eg Gerry and cellular substance in Luz) let alone Suzanne.
It did give the police intelligence which enabled them to concentrate their focus on finding appropriate evidence to bring a suspect to trial and eventually to justice. Which is what they did.
It is ridiculous that based on the mantra "dogs don't lie" ... some actually wore the T shirt and bought the mugs ... sceptics have waged countless campaigns of opprobrium against the parents of a missing child all based on a total misunderstanding of what the dogs actually do.
The dogs alerted in Shannon's case ... but not for Shannon.
The dogs alerted in Suzanne's case ... her body has never been found ... but a conviction was obtained in court based on all the other evidence there was to support her death and who the killer was.
There was no evidence of death either in Jersey or in Portugal ... which makes it a bit of a mystery why there is such a concentration on this single cadaver dog when there are thousands of others in the world who never get a mention and whose names we do not even know.
Obviously ... he must be middle class.