I do not think SH will walk free.It will be the difference between a murder and a manslaughter charge.
It will also depend on what other evidence comes to light.
without a cause of death and/or confession then all it needs is the defence to say "prove it"
obviously there may be other evidence that we don't know about yet so we'll just have to wait and see what comes out at the trial.
no matter what any of us think of him, he's still innocent until proven guilty and no i'm not defending him at all.