The Pretty Little Liars Halloween special (Season 4, Episode 13: “Grave New World”) seemed to solidify a lot of what we cautiously assumed in the summer finale: Ezra (Ian Harding) is “A”; Alison (Sasha Pieterse) faked her own death; and Ezra is after Ali. But we still have so questions about how Ali’s fake death went down! Luckily, Sasha talked to E! Online about some of the answers.

"Ezra's been tracking her for a very long time,” Sasha said about the cat-and-mouse game being played by Ezra and Ali. “I can't tell you what kind of reason he has yet, but you will find out. It's a big reason."

We’re glad to hear that we will find out why Ezra has been chasing Ali because, right now, there’s a big, motive-shaped hole in his “A” storyline. It’s not bad storytelling (yet), but it does leave us to imagine a whole host of terrible reasons for Ezra’s interest in Alison.

Whatever prompted Ali to fake her death, it seems we have a lot more to learn about the night of her disappearance: "There's a lot of different people that she saw the night she disappeared,” said Sasha, “A lot of different people that she came in contact with that the girls didn't know about, and you've yet to find out.”

Is there anyone left in Rosewood for Ali to run into?! People we already know she saw the day of her disappearance include: the Liars, Jenna, Toby, Garrett, Jason, Melissa, Ian, Aria’s dad, and CeCe. She’s running out of Rosewood residents to bump into.

Catch the Pretty Little Liars Season 4 winter premiere, Tuesday, January 7, 2013 at 8 p.m. ET on ABC Family.

Credit: Celebified Photo: Pretty Little Liars Halloween Special "grave New World" Preview Photos: Ezra Lurks In The Shadows While The Girls Search For Ali!