I don't agree that the PJ hashed the investigation. The evidence proves that instead,the British government hampered it. I don't agree either that there is no evidence that Maddie may have come to some harm. We have the evidence from Eddie and Keela,brought in by the Leicestershire Police. Dogs don't lie. However,unfortunately it is a fact that the British Government do.
Tyler,,the Portuguese police wouldn't allow the British police to intervene at any time during the investigation,,so the hands of the British police were well and truly tied. The laws in Portugal didn't allow outside interference within the jurisdiction of Portugal.
The PJ's did indeed hamper the investigation by not immediately cordoning off the apartment to treat it as a crime scene.Instead,,the world and its mother piled into the place,including the police and contaminated everywhere before any investigation began.
Every bit of evidence that was taken was contaminated/impaired,,and it was only two weeks after the childs' disappearance that another family moved into the apartment. It was at this stage that it was decided to do forensic tests,,,after this other family had vacated,,so any evidence gathered could well have belonged to the families ( including children ) who stayed at the apartment.
Yes,,the dogs did detect blood/death,,,but one thing those dogs couldn't do was to speak and tell officers whose blood it was.
The cadaver dog would have picked up the scent from Kates' clothing,,or even the wardrobe in which they hung,for the simple reason,that only a week previous to their holidays,she had attended 6 deaths,,either in the home,hospital or mortuary,,and try as you might to bathe,shower,etc,although you can rid yourself of a " smell " but with a cadaver dog and its sensitive nose,can detect it days,weeks,months after.