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Alison.
Alison has a mentally ill twin sister Courtney. Courtney switched places with Alison and it was actually Courtney who the liar's met and who was murdered. Alison hates the liars for becoming friends with Courtney and believing Courtney was Alison.
Mona was -A but she was acting on behalf of Alison. Once Mona was sent to the mental hospital, Alison takes over.
Or at least that is what happens in the book.
What else can I help you with?
Why is Mona messing with the Pretty Little Liars?
Because the used to pick on her, (The Pretty Little Liars)
When was Pretty Little Liars created?
Pretty Little Liars was created on 2010-01-01.
When is Pretty Little Liars being with season three?
The Pretty Little Liars season will return in June 2011!
When was Spencer A from Pretty Little Liars what season?
Spencer Hastings from Pretty Little Liars appeared in Season 5.
How would you describe A from Pretty Little Liars?
The pretty little liars think it stands for Alison
Who is Louis on Pretty Little Liars?
there's no Louis in pretty little liars.
What is the first book in the Pretty Little Liars series?
Pretty Little Liars!
Is there a new Pretty Little Liars book?
there is not a new pretty little liars book
Who plays trista on Pretty Little Liars?
No one there is no trisa on pretty little liars
Does Spencer from Pretty Little Liars die?
No, Spencer from Pretty Little Liars does not die.
How did Ezra die on Pretty Little Liars?
Ezra did not die on Pretty Little Liars.
What are the names of pretty little liars?
The books in the Pretty Little Liars series are:Pretty Little LiarsFlawlessPerfectUnbelievableWickedKillerHeartlessWantedTwistedRuthlessStunningBurnedCrushedDeadly
Which is the second book in the Pretty Little Liars series?
Flawless: A Pretty Little Liars novel
When was Noel Kahn's party in Pretty Little Liars?
In the first book, pretty little liars
How pages are in book one of Pretty Little Liars?
There are 286 pages in Pretty Little Liars.
Where are Jenna and Toby's parents on Pretty Little Liars?
in the bahamasGONE CAUSE there not in pretty little liars
Why is Mona messing with the Pretty Little Liars?
Because the used to pick on her, (The Pretty Little Liars)
