y theory. New here so here goes-!

The dad wanted has an addiction priblem. Was a love triangle with the two girls and him. He went to the apartment, pretty easy he had all keys because he already said in interviews he did. Also explains why dog didnt alert because it knew him.

Also somehow the roomamets downstairs mustve heard and became collateral damage? If it was him, of course he could not let them be if he was seen.

Also he mentioned in an interview he HAD ALL PW to the girls phones. Acts super creep/cringe, and basically is praising himself and subtly insulting police in latest interviews.

This is MY THEory only, but something about his interviews are off. Anyone saying otherwise, well lotta dum dums