10 Most Twisted Characters in American Horror Story

8. Sister Mary Eunice (Lily Rabe) 'Asylum'

A pure soul and gunning for the award of 'Most unfortunate member of Asylum', it is a toss up who had a worse time at Briarcliffe €“ Sister Mary Eunice or Lana Winters? Everything seemed to be going well for Mary Eunice until the events of 'Trick and Treats' where an exorcism forces a demonic spirit into the body of the happy nun. Sadly for her fans, this is pretty much the last of her true identity that we see. She was a fragile and innocent girl, scared of Sister Jude and someone who put too much trust in Dr. Arden. After her possession the tables turn, it is she who takes control of the relationship as Dr. Arden struggles to subdue his sexual advances towards her. Whatever shred of Mary Eunice is left slowly deteriorates over the season and she takes great glee in all things antichrist- In particular the scene in the film 'The Sign of the Cross' where the Christians are fed to the lions.

Demon Mary Eunice released Lee Emerson, stabbed the Mexican with a pair of scissors, got Sister Jude drunk and had her wicked way with the Monsignor €“ it was a busy week! After raping Monsignor Timothy he was left with no other choice, they argued on top of the stairs and the real Mary Eunice finally appeared, pleading with him to save her. The only way to save her soul was by throwing her from the top of the stairs, this killed Mary Eunice and the demon within, ending its reign over the sanitorium.