Ok heres what happened... Ali's sister Courtney was metally ill and always pretended to be Ali. One day Ali accidentally was taken to the mental hospital instead of Courtney. Ali killed her and threw her in the hole in their backyard.
She was pretending to be Ali
Ali wanted revenge after her sister took over her life and she believed the pretty little liars helped her do so....she wants revenge.
No, her twin sister Ali did.
Allison didn't kill her friends in Pretty Little Liars
shes married to the guy her sister was last dating
Because the Pretty Little Liars weren't actually her friends. Courtney, (Alison's twin sister) made friends with them. Alison had nothing to do with them. So she's mad and tries to kill them.
No.
no
Because she has mental issues and it's her sister who is normal not her
None of the pretty little liars die. I've read the books, Ali doesn't kill anyone.
no
They didnt but A wanted the pretty little liars to think it was them.