You don't know that your pedophile has ANY evidence to back his story... sorry, stories, he has had four...<quoted text>
So. Just because you have a dead body, it does NOT mean a crime was committed, especially if the person responsible is claiming self-defense and has evidence to back that claim..
And of course whatever else we know or don't know about your pedophile defendant... we do know- and the court knows- he is a liar.
So he isn't going to take the stand and won't be able to spin his story.