[NatureGirl]

I don't quite follow what you're saying. The police didn't know anything about the poison oak at that point (before discovery of the body).

[Rattlins]

They sure did, the BUG MAN had a bad case and he was working
with the DA

[the Deejay]

The forensics knew about it. So if DW was a suspect or in jail, the police & investigators had plenty of time to check DW for poison oak rashes. And this was before the prelim. (Oh, I think I'm getting tired for one day.) LOL!