I was just thinking ... one of the neighbors reported that when they spoke to RB over the weekend, he said he was nervous about them looking at his apartment because of the beer bottles, etc. His apartment. But she (likely) died in the vacant apartment and he left that gruesome scene there. I wonder if he was nervous about his apartment because he knew he had evidence somewhere in there that would link/tie him directly to the crime. Evidence he couldn't esily get rid of (or was unwilling to let go of.) I mean, whatever he wore had to either be in his apartment, or the dumpster, or somewhere on the River Ridge property. Even if he covered his own clothes with a coverall, the coverall would probably have some sort of RB DNA on it or a bloody fingerprint, something.
Since he was so busy being so 'helpful' over the weekend, I'm not picturing him in his apartment or the complex laundry facility with a Shout Stain Stick or a tub of Oxyclean.
Dumb question alert: When a crime is especially 'bloody', don't detectives often look at the drains in the bathrooms/laundry stuff? Is there a way to tell (forensically) by looking at pipes and drains that blood was washed through them? Or have I been watching bad movies/imagining things?