She knew. It was the son.. the dilemma of losing one child and the agony of knowing the other one did it, and not being able to resolve it.
I kind of think she knew too and I think it was her son. Sad
Bump..
Not her son either.
If it was the son, did he write the ransom note? He was only 9 at the time. I can't imagine him writing a 3 page ransom note.