If he did it, he's playing up the part of mournful father really nice.
So did Susan Smith. I'm not saying he did it, but I'm not ruling him out yet.
Remember the woman who killed her twin boys by strapping them into the back of her car & drowning them,then crying for the cameras,saying "a black man" carjacked her? It's possible to beat a polygraph test,and really determined lunatics can lie their way out of anything,and make people believe it.There's some really sick people in this world...God forgive me if i'm wrong,but,who do you believe nowadays?