Pretty Little Liars: 9 Things That Still Have Us Scratching Our Heads From the Finale

The only person we can think of who has those initials is Alison DiLaurentis. And seeing as she just signed herself in for psychiatric care, it's pretty much impossible that she's the one dragging an unconscious Hanna through the bell tower. So, who can it be?! Is it someone we've met? Is it Uber A?!