I have every reason to believe that one of my InLaws is a sociopath. What I don't understand is why when they are caught out in their lies they manage to charm everyone round to thinking they (ie us) got it wrong. Even the adult children continue to fall for it everytime. I (and my DH who still falls for it all and DC's) have cut all contact with the person but worry about the damage he is doing to the rest of the family.