Pretty Little Liars always loves to thrill and chill the audience, and that's doubly true during the annual Halloween episode. While the best part of the Season 4 Halloween episode was the all too brief scene with Alison, there were also some scary moments that left us jumping out of our seats.

After pondering this very important question long and hard, we've made our picks for the five scariest moments of the episode.

5. The falling glass. It almost felt like the house itself was out to get the Liars as they ran through it, searching for Ali, and nowhere was that as clear as when an ominous piece of  broken glass inched its way towards Aria and Emily's necks before shattering right behind them after they, fortunately, moved out from under it. We knew that moment was coming because it was in the promo, but we still jumped.

. Hanna get separated Hanna's classic horror film trip through the world's creepiest house definitely had us on the edge of our seats. No one can say this show doesn't know how to do suspense.

3. Hanna in the phone booth. That said, the best part of Hanna's story for us was watching her trapped in that creepy phone booth. We especially liked the moment with the lights, and watching the masked person drag Ali away. The director used the confined space to make us feel as claustrophobic as Hanna.

2. Spencer gets attacked. It's bad enough when "A" attacks one of the Liars under normal circumstances, but doing it in a gas mask? Yeah, we're going to have nightmares about that for a while.

1. Ezra! That said, nothing made our hair stand on end like watching Ezra sulk around Ravenswood. Now that we know he's up to no good, we're worried every time he appears on screen.

What did you think was the scariest moment of the episode? Let us know in the comments below!

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

Rebecca Martin is an Associate Editor at Wetpaint Entertainment and our resident Game of Thrones, Breaking Bad, and genre TV expert. Follow her on Twitter and Google+!


Credit: Celebified Photo: Tyler Blackburn Of Pretty Little Liars Fame Says He's Not Leaving "haleb" Behind With His Move To Raveswood!