she is mistaken for her twin sister Courtney and sent to a mental institute while her crazy sister stays home, pretending to be Alison. whenever the real Alison returns, she kills her sister for revenge and becomes "A"
She escapes.
alison takes the place as A
No. A friend of Alison's.
No.
Yes, Allison got discovered in Pretty Little Liars
Alison dated Ian.
It was destroy and Detective Wilden thinks that Emily was the one who killed Alison and was the one who destroyed Alison's memorial.
Alison
noNo.
Alison.
Alison....
NO!