There was an interesting thread about the man who recently murdered his two children and committed suicide in his car, which looked at the responsibity of parents and the character formation of "babymen".
These parents seem beyond deluded to me. The physical and circumstantial evidence is so overwhelming, how can they convince themselves that he is not guilty? I can't feel too much sympathy for people who would try to blame a deceased mother for murdering her child against all the evidence- how must her family feel.
I am curious as to how he was brought up. Was he the class bully at school whose parents always defended him and stuck their fingers in their ears instead of sorting him out?