We know he had access to the house. He entered the house, according to him, to retrieve a knife to supposedly cut Rebecca down. He's telling us he had access.
My question is...seeing as he had no problem accessing the inside of the house to retrieve said knife to cut Rebecca down then...who's to say he had no access hours earlier???
Do you think someone else in the house opened the door to the kitchen for him?
He entered the house but that doesn't equal him knowingly having access to it at any time. He didn't stay at the house, control the keys or the alarm system. He may have entered the house to retrieve a knife but technically, if he didn't have permission, he was trespassing.
I'll continue to hold the belief he was not aware the door was unlocked.
JMO