Just a thought ~
on reading Jon Clarke's book "MY SEARCH FOR MADELEINE" he recounted a very chilling encounter with some of those surrounding a witness he had made an attempt to interview.
I felt 'threatened' for him and I was only reading about it from a distance not experiencing it first hand as he did. There is also a world of difference in using a notebook, as Jon was, with or without an accompanying digital voice recorder and using a video camera as MWT was.
I don't know how many might have been in his production team or if he was filming on his own but I believe he was tweeting about his progress along the way and updated that only the finishing touches required to be added.
Added to the personal problems he tweeted about one speculates if MWT met with a similar or worse situation as that experienced by Jon Clarke. I think that geographically he might have been in the same area where Jon experienced the vulnerability of his situation.
The German documentary is to be broadcast very soon (Monday I think?). But I think they may have had the advantage language and of numbers.
Jon Clarke was probably in and out without much fanfare but MWT advertised his presence so they knew that if he had done his homework he was on his way to them.
I think there are those who do not wish any light whatsoever being shed on Madeleine, what happened to her and who may have been involved and as Jon Clarke found out that sort of presence does exist.
Wonder if MWT encountered something similar.