For reasons already explained.
The shelved enquiry thoroughly investigated the McCanns and found not a shred of evidence against them.
The investigation looked at various possibilities;
the investigation equated the verification of several hypotheses:
abduction, for the purpose of sexual exploration or others (i.e. posterior adoption, child traffic, organ traffic), without homicide; abduction, followed by homicide with (or without) concealment of a cadaver, hypotheses that were considered under the double sides of the abduction (if it existed) having occurred due to feelings of vengeance of the abductor(s) towards the parents (directed abduction) or simply taking advantage of the circumstance that the child was in a situation of actual vulnerability (opportunity abduction),
accidental death, with posterior concealment of the cadaver and, underlying all of these possibilities, abandonment, substantiated as a crime under article 138 of the Penal Code. The possibility of
theft, whose author would have been disturbed by the child Madeleine and who, in order to prevent her from disturbing him, neutralised her in a violent manner, and, afterwards, took her with him, dead or alive, in order to leave no trace that could eventually lead to his identification.
At the end of the investigation;
While it is an unavoidable fact that Madeleine disappeared from Apartment 5A of the 'Ocean Club', the manner and circumstances under which this happened are not - despite the numerous diligences made in that sense -, therefore
the range of crimes that were indicated and referred to during the inquiry remains untouched.The investigation looked at all the above scenarios and in the end all of them were still possible.
http://www.mccannpjfiles.co.uk/PJ/LEGAL_SUMMARY.htm