Pretty Little Liars: Season 4 Episode 21 Promo

The last PLL was pretty intense. We found out the real reason why Ezra was stalking the girls and we also found out that Ezra isn't the "Big A".

The Promo for season 4 episode 21 is called "She's Come Undone" and it looks like Aria is going a little bit crazy. Well, I'm sure most people would in her situation knowing that the person she loves was lying to her the whole time. Then again, the show is called "Pretty Little Liars".