All Mr Mignini possessed were the ravings of a person, well known to him, called Gabriella Carlizzi, a spiritualist blogger in Rome whose messages from "the other side" had decisively influenced a previous investigation he led. Ms Carlizzi alone claimed that both Knox and Ms Kercher, from Coulsdon, Surrey, may have belonged to a deviant Masonic sect, the Order of the Red Rose, whose rites involved human sacrifice. Again, there was no evidence of any sort for the outlandish claim.
So is he a "conservative Catholic" or isn't he? He's certainly no Christian, and he can't fall back on an insanity defense. The one explanation that makes sense is that he's a monster who can't lie very well.