You said everything I wanted to say.Why is the priest saying he was deceived & that he will take what the McCanns told him to his grave? This is implying that he knows something!
If they did not confess killing madeleine to him why the heck doesn't he just come out & say that? That would not break any seal of confession as there was no confession made!
I simply don't understand why the priest said he was deceived if he's not going to reveal who deceived him and why. Can we assume he's referring to the McCann's deceiving him?