Someone's Dying in the Pretty Little Liars Finale, but Who?!

Mary Drake is on the run. She's wanted by the police, and she's got a lot of enemies in Rosewood. She killed Jessica DiLaurentis, and she's Spencer's mother. She's an ally with Archer Dunhill before his death. There are so many reasons why Mary might be a target. And that's why her death may be the last thing we need to bring this show to an end.