Who do u think 'A' is on Pretty Little Liars?

So in the books it's Mona and Alli. But a interview that Lucy Hale took, she said that it's different from the books. I'm thinking that it's going to lead up to Mona, because of what happened a long time ago, but I kind of think it's Jason. It can't be Spencer, because after she pushed Ali, she got right back up and left to go see Ian. It can't be Jenna or Garret, but they know something about Jason. In one episode they said no one could know about the Jason thing. So I do believe Jason has something to do with A or Ali's killer. But Mona could be A, it's a possibility.

I think its Jenna she is probably not blind in the books there's 2 -A 1 is Mona and the other Alli's twin

I completely agree! The second I have a hunch at what is going on and who is behind it, something new gets introduced. For a while I was thinking that Mona and Noel were somehow behind it together, and then they showed them together and I was like, yes I'm on the right track! Also, at the end of last season, Mona and Lucas had a pretty long conversation so I wonder if somehow Lucas is part of it too. This hunch was at the end of last season and the beginning of this season. Then, they start showing all of this stuff with Mike, so he is looking pretty sketchy! Also if you think about it, it sort of makes sense - all of this A stuff started going on when Aria and MIKE moved back to Rosewood from Iceland. Plus Jason. I don't trust him. Garrett and Jenna!?!?? I also have no idea how they are coming into this equation, but something is definitely up. I'm thinking that A is going to be somebody we least expect to be it. Like it will turn out to be someone who we completely thought was a "good guy" but ended up not to be

I think Lucas is -A and Allison's killer. The books are going to be different than the show. The producers have said that they are trying to stay as true to the books as they can, working with Sara Shepard but things have to be different for the show than they are in the books bc otherwise, everyone that has read the books will already know exactly whats going to happen and how is that any fun. The whole mystique and intrigue of the show is not knowing who -A is and who killed Allison. Also...the actors on the show don't even know who -A is. There are articles posted on the PLL Facebook page from the producers saying that the show will be different and the actors don't know who -A is....whoever it turns out to be, the actor will be shocked! Also....the identity of - A will most likely not be revealed until the very final episode of the show - not the season - the entire show. Not to toot my own horn but I said way back when that video first was shown with Allison on the ground and her hand digging in the dirt that she was not dead. I thought it was her and Ian getting it on in the dirt, she was digging her hand in in the heat of the moment...like digging into the sheets had there been a bed. I think that Jenna's involvement is not what everyone thinks it is. I think she is not really blind, and knows who -A is, having overheard something while pretending to be blind. Though I cannot figure out the connection between her, Ian and Garrett. That's weird to me. Lucas is so tech savvy, sending the e-mails, texts etc would be nothing for him. Just like showing that video of Allison and Ian on the side of the - whatever that building thing is called in the cemetery - that kinda thing is so simple for him. He is totally in love with Hanna and he was tortured more or less by Allison. He destroyed her memorial and I think that just b/c he is infatuated with Hanna, that wouldn't stop him from seeking revenge.

Spencer or one of the cops or one of the moms or Alison or Toby or the blind who I don't think is really blind.

Mona.

I know who it is....I read the books.....Should i tell you.....XDDDD

aria. it just makes sense.

I think A is congruent to B