Alison's twin sister Courtney ecscaped from the mental institution and Alison is mistakened as Courtney and is taken to the mental institution and is treated like a patient.
When Courtney is murdered, Allison ends up in a mental institution.
Because she was mental.
she tried to be alison and she was in a mental ward
Hanna's and Alison's roommate in the mental hospital.
Courtney is mental so alison is playin Courtney and her parents don't so they ship her off to go to mental school
Courtney wants to pretend to be Alison meanwhile Courtney was supposed to be in a mental hospital
Ali had a twin no-one knew about. (Courtney) Courtney had mental problems and had to go to a mental centre for mental people but she didn't want to go so she pretended to be Alison, her sister. their parents believed she was Alison and sent the real Alison to the mental center instead of Courtney. so basically the pretty little liars were best friends with Courtney not Alison. Alison escaped from the mental center and was angry at Courtney, i guess she became a little mental from being treated like she was mental for a year. anyway she came and buried Courtney alive at the night of the sleepover as revenge for what happened to her.
they didnt Ali had a twin no-one knew about. (Courtney) Courtney had mental problems and had to go to a mental centre for mental people but she didn't want to go so she pretended to be Alison, her sister. their parents believed she was Alison and sent the real Alison to the mental center instead of Courtney. so basically the pretty little liars were best friends with Courtney not Alison. Alison escaped from the mental center and was angry at Courtney, i guess she became a little mental from being treated like she was mental for a year. anyway she came and buried Courtney alive at the night of the sleepover as revenge for what happened to her.
At a mental place. And is made to live her dead twin sister
Alison had a lot of secrets and that was one of them.
Alison killed her twin sister Courtney. The only reason why she killed her is because she stole her perfect little life and alison is in a mental home and Courtney is dead
Ali was athe mental institution because they thought she was her identical twin sister Courtney who had a mental issue and WA always pretending to be ali