"[Everyone] figures out what happens to her — if she's dead, if she's alive. Pretty much what happens is awful and it's traumatic and it's terrible. Pretty early on in the season the girls make a huge mistake. They've done a lot of stupid things on the show. They've killed people on purpose, and they've lied, and they've cheated. But this is actually truly and genuinely a huge mistake that came out of nowhere. So the girls are trying to cover it up. They don't come clean, obviously. But if they get caught, it could change their lives. So they're really trying to cover it up."