Pretty Little Liars - Episode 5.03 - Surfing the Aftershocks - Promo Pics

So as it happened in the books, Ali has a twin called Courtney, and Courtney was mentally insane and was sent to the mental hospital, and switched places with Ali so she could have Ali's perfect life. Then Alison wanted revenge. So the stalked Courtney (who was pretending to be her) and was A. All the while, Alison was pretending to be Alison in disguise as Vivan Darkbloom (for example to Hanna [at the hairdresser]) So the real Alison used Vivan Darkbloom as a screen name while Coutney took the name of Alison DiLaurentis. And then Alison killed Courtney at the sleepover, and was A to Emily,...