And yet, the police who inspected the metal window shutter found no damage at all to any component part of that particular bedroom window shutter, no buckled metal no tool mark, no DNA. It was a similar story when the locking mechanism of the sliding bedroom window was examined and scrutinised - no damage, no cracked glass, and no fine tool marks...
And, just to throw a spanner in the works, neither the blood hound, nor the cadaver dog, brought to the scene by their handler Mr Grimes, reacted or detected human blood anywhere at all inside the children's bedroom of the McCann apartment, or rather more importantly no trace of any blood or cadaveric scent at the bedroom window, inside or externally, and in particular no such traces or alerts by the specialist dogs on the bedroom window curtains, or indeed, the single bed and its blanket or sheets positioned beneath the window where anyone who had entered or exited, or both via the window would have needed to climb over or upon it.
We should never lose sight of the fact that these specially trained hounds or dogs cannot be treated as experts, but rather that they are capable of alerting to the or a presence of human blood or cadaveric aroma - once they alert it is up to the powers that be to search in those areas where such a dog or a hound had alerted, and any samples taken can be examined scientifically and that where such tests produce results which can be relied upon in a criminal prosecution of this person, or that person, that it is not the blood hound or the cadaver dogs which give the evidence, since they are simply a means to an end, or in other words part and parcel in a system of investigation...
