How come these murders are suddenly resolved? (SPOILERS)
Liked the movie, right up to the end. Then I got a little bit confused....
My question: who told the police what happened?
The only ones who knew about the 'deal' between the mother and the killer, were the mother and the killer (and the guy that recommended him).
Ben didn't know, he only knew there was a guy in the house who killed his mother and his little sister and that his girlfriend killed his other sister.
Diondra didn't know, because she was in Ben's bedroom too when the mother and the sister were killed.
Libby didn't know, because she fled the house.
But suddenly we see a big story in the news, that arresting Diondra is part of a much bigger case of a serial killer that admitted to have killed at least 50 people on their request.
Did I miss something?