12 'Pretty Little Liars' Season 4 Theories Set Up By the Halloween Episode

Then again, we didn't actually see Ezra put on the gas mask. In the world of Pretty Little Liars, there is no such thing as an accident, which makes me inclined to believe that Ezra may not be the dude who tried to attack Spencer. Could he have had other motivations for being in Ravenswood? Could he have wanted to find Alison to protect her and the girls? All possibilities, though if Ezra pulls a Toby, I will be thoroughly disappointed.

Why one would be scared of a 5'8" British boy-doctor, I have no idea. But Wren has been seriously shady during his entire run on the show (remember when he helped Melissa get medical supplies for Ian, who ended up dead?) so it's not totally surprising that there could be something sinister underneath Wren's accent. He definitely has a penchant for younger girls (Hanna AND Spencer, to name two) and could definitely have crushed on Ali during her summer at the beach. Could Wren be "board shorts"?

A stretch, but doesn't it seem a little fishy that Jake suddenly appeared in town just as Aria was going on the rebound? While the show may have incorporated in Jake to throw a wrench into the Ezria relationship, I still have my suspicions about Jake's true intentions with Aria. Plus, Ms. Grunwald explicitly told the girls that one of them had been touched by the one that Ali feared the most. Could the one be Jake?

Then again, maybe Ali isn't really scared of anyone. Ali never struck me as the type of girl to cower in the face of a tormenter... why would she uproot her life because of a threat? Could Alison be engaging in another one of her twisted games and just messing with the liars in order to cause them harm down the road?

If Ali is alive (as we discovered in the Halloween episode), than whose body did everyone bury? There definitely was a body in that grave. (We know because an entire subplot was the fact that someone went and dug it up.) So if Ali's body was never in that hole, than whose body was it? Could Ali have a twin who took her place and ended up dead?

Mona could have easily pretended to be making amends with her former enemies, but what if the entire time we thought Mona was Team Liar, she was still very much Team A? Mona told Wren that she stopped telling him things because of where Wren's loyalties were... but what if Wren's loyalties remained with the Liars, and Mona was still sworn to Uber A?

We assumed that the meeting between Jenna, Melissa, and Shauna — where Melissa said she wanted to bring the "bitches" down, or something to that effect — was about them plotting revenge on the Liars. Yet, Melissa told Spencer that everything she had done she did to protect the girls, and we're inclined to believe her. What if the "bitches" referred to CeCe Drake and the other members of the A-Team?

Melissa told Spencer that she has protected her from the beginning. How about from Season 1? While Melissa played the part of the grieving widow, when push came to show, did she save her sister from imminent doom?

But wasn't Melissa in the hospital when Spencer had her scuffle with Ian? Now that we know that Alison is alive, it would make sense that she would want to save her BFF Spencer from dying at the hands of her summer fling. Has Ali been protecting the girls all along? Did she save Emily from the carbon monoxide in the barn, too?

Oh, hey, remember that forgotten plot point? A seems to have some information about Toby's mother's suicide. Could it have been that Alison had some connection to Toby's mother's death?

While Ravenswood may be filled with ghosts, Rosewood may have one or two of its own. (Remember the ghost girl that Ashley saw on Halloween?) It's possible that Ali did die... but that her spirit remains trapped in Rosewood until her killer's identity is revealed. That would certainly answer the question as to how Ali keeps on disappearing and reappearing... no one is that fast of a runner.