After Eddie and Keela alerted in 5A, another forensic team was deployed. This time the Portuguese investigators decided to get samples according to UK specifications, and the results were bagged and tagged and sent to the Forensic Science Service (FSS) in Birmingham.
Given what would be found, this would be turn out to be a master-stroke for Portugal.
Making sense of the FSS findings could be made harder. They could have used ancient Greek, Braille or high-level computer encryption. As it is, the correlation of what the Portuguese put in and what the FSS pulled out is extremely complex.
If you read the information at the link above, bear in mind that 3 separate techniques were used, so quite a few of the samples turn up more than once.
Straight-forward DNA extraction was the first route. Given the small size of the samples, this was invariably unsuccessful.
Then low-copy number (LCN) was tried. Basically, this multiplies the DNA.
Third, some samples were tested for blood.
Now on to the sites in 5A. Of the 3, or possibly 4, areas signalled by Eddie, samples were taken from behind the sofa and in the garden.
A summary of the results is as follows.
Several samples were not tested e.g. grout between floor tiles.
In around a third of the samples, DNA checks did not work and LCN did not work.
In a number of cases, the LCN result was incomplete. That is, there was insufficient evidence to come to a conclusion.
In 4 samples, the profile was successfully identified. However, none of these profiles matched any of the McCanns. That is, not Gerry, not Kate, not either of the twins, and not Madeleine.
In case you are wondering, Madeleine’s DNA had been retrieved from saliva on a pillow. It matched Gerry as it should. It matched Kate as it should. Although there is a one in four chance of it matching a sibling, it did not match the twins. Therefore, it was Madeleine’s.
Back to apartment 5A, the forensic team taking the evidence also provided their own DNA mouth swabs. The successfully identified samples are not from the forensic team.
So first you have a totally unspectacular fact. There was DNA in the flat 5A that did not have anything to do with the McCanns and had nothing to do with the forensic team. And it hasn’t been matched to anyone.
Then there is the interesting part. A piece of floor tile from behind the sofa was checked. There wasn’t enough DNA to get a straight-forward check. LCN matched Madeleine McCann, though that match is complex. Possibly more than one person contributed DNA to it. It appears that Madeleine contributed DNA. A second, different test of the same tile did not find anything conclusive.
A number of samples were tested for blood. None of these found blood. The tile where Madeleine’s DNA may have been found had to use LCN, due to the size of the sample. LCN cannot tell whether a sample is blood or otherwise. Spit would do for LCN.
This means it is down to Keela, not Eddie. A lot has been said about Eddie and his capabilities. Keela is an altogether darker quantity.
According to Martin Grime, she only finds human blood. Not pig blood or beef blood but only human blood.
This leaves me with a major headache. If Keela reacts to something other than human blood then the options are wide open.
If Keela actually does restrict to only an alert of human blood, then what have we got?
Between Eddie (the cadaver dog that alerts to blood) and Keela (the dog that only alerts to human blood) and the FSS (which cannot say what bodily fluid it may be, only that it appears to match Madeleine), what have we got?
Madeleine might or might not have bled in 5Aaccording to the dogs. Or sweated, or perhaps she may, or may not, have shed a tear, according to the FSS.
Or perhaps she sneezed, and Eddie reacts to this, Keela reacts to this, and the FSS can’t tell. Perhaps.
Colonel Mustard with the lead piping in the library is so much simpler.