Its a possibility Muriel Mckay was fed to pigs,so there is possibilty's it happens.
http://www.bbc.co.uk/news/uk-england-17464298
No one has ever found a trace of that missing litttle girl.
No forensic evidence was ever found to substantiate that (IMO) wild theory.
If you haven't read the alleged "evidence" against that family... it really is one of the most bizarre trials that I've ever read about. And I do mean trial, not just the "investigation". How that case ever even got to trial is beyond my comprehension in the 21st century.
Whoever is guilty in that case, unless something new comes to light, I just can't see how justice has been done with respect to that little girl.
And, if those currently serving very long sentences are not in fact guilty, there's a predator out there who is free as a bird to prey again.
Whether there is any direct connection to Joana's disappearance, the sexual agressions against other girls in the area over a period of years and Maeleine's disappearance - I have no idea. I find it to be a possibility worthy of investigation, which may well be the final lead that SY (and possibly also the Porto PJ team) are pursuing.