Thanks everyone for the updates.
Something in particular is standing out for me. The prosecution made the point - if you had just murdered someone, would you ask a random stranger to dispose of the body for you?
Taking it further - why would you? To hide the crime.. Ok so you are going to trust a young lad who apparently struggles with communication to take care of the job for you.
You're going to trust him not to "dob you in", even though he's a complete stranger. You're certain he won't freak out, or yell, but you don't know him.
You're going to be sure that he won't think you're a monster for killing this woman, and react to that.
Here for me is the reasonable doubt.
I know some people think he was covering up for a family member,or working with someone. (I don't, personally.) But this cant be introduced into the deliberations. It hasnt been entered as evidence anywhere. The jury cannot bring their own guesswork of other theories into any debate, AFAIK. So it's not a factor in the case. It's mystery man, or it's the defendant, acting alone.
Those are the two choices, based on the evidence.