I wanted to bump
@gitana1's most excellent post that summarizes with citations all of the evidence that tends to prove CW's guilt in this case, together with the evidence that tends to disprove CW's own "confession."
We only have a small portion of the details in this case, but as gitana1 has pointed out, what we do know is damning against CW. We can feel pretty confident that we know the Who and the What.
The only question that remains in order to form a strong Theory of the Case is the Why. And that is the question that I think all of us want to badly to understand, because we don't like to think that good, loving fathers can just snap and kill their families. We need to believe that there is order in the world.
Thank you, gitana.