Is there any credible evidence that Madeleine McCann was abducted?

Apart from the varying statements of The McCann`s tapas friend, Jane Tanner I am struggling to find any evidence of the alleged abduction of Madeleine McCann. I can find plenty of evidence against this theory but the McCann`s say that the Police bungled the investigation and stitched them up. They say that there are wholly and innocent explanations for anything the police may or may not have found and that cadaver dogs are notoriously unreliable. Can you point me in the direction of the evidence of this abduction and also to the wholly and innocent explanations to the evidence that is in the PJ files.