That is all part of the mystery. We don't know, it probably has to do with something the liars have done to A in the past.
Allison didn't kill her friends in Pretty Little Liars
You should read the books or watch the series. A certain "A" is trying to kill the liars. It's not Alison--she's dead
No.
no
Yes. She falls off a cliff, trying to kill Spencer.
None of the pretty little liars die. I've read the books, Ali doesn't kill anyone.
no
Ali wanted revenge after her sister took over her life and she believed the pretty little liars helped her do so....she wants revenge.
They didnt but A wanted the pretty little liars to think it was them.
She burned herself trying to kill Spencer, Aria, Hanna, Emily & Melissa
Ian doesn't kill Mona. Mona falls into a ravine and dies after trying to kill Spencer because she found out Mona was A.
Nope.