Alison takes over because Mona was caught,
Jenna is Toby's step sister in pretty little liars. She got blind after Alison threw the stink bomb into the house,unaware of someone being in it.
No, Mona is A at first. Then Mona dies and Alison takes Mona's place in being A. Alison never dies, her twin sister did.
No Ali is not being Jenna in pretty little liars.
The Pretty Little Liars season will return in June 2011!
Okay well this is a spoilier but Aria ends up being a and then she kills one of the liars im not tell you which one!
Up your butt, around the corner, through the tubes, and out your boobs.
There was never a movie of pretty little liars but i think ali is -A because her twin sister courney was pertending to be ali.So ali got revenge on cortney and killed her and then she got revenge on aria,emily,hannah,spenser by being -A
She found Alison's old diary in some boxes of stuff from Ali's room, she learned the secrets, and she just started being A.
Alison DiLaurentis accidentally blinded Jenny and found out that her and her step-brother were doing it regardless of being step-siblings. Later the real Alison DiLaurentis kills Jenna for knowing too much about the Alison/Courtney switch. See Wikipedia for more
She realizes that she should help the Liars, not go against them.
A wrote in jungle red lipstick color (Alison's shade which is later found being woren but Jenna) And it said: It wont be that easy to get rid of me - A
Yes she is, Ali killed her twin sister Courtney so instead of Ali being with Aria, Spencer, Emily, and Hanna it was Courtney that was with them.