TVLine
http://tvline.com/2012/06/15/american-horror-story-britne-oldford-season-2/
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While no character description was given at this time, TVLine reports that conventional wisdom points to her being one of the patients holed up at the institution for the criminally insane run by Jessica Lange.
“American Horror Story” Season 2 will be set in the 1960’s. Jessica Lange, James Cromwell, Joseph Fiennes, Adam Levine, Zachary Quinto, Chloe Sevigny, Evan Peters, Sarah Paulson, Lily Rabe, and Lizzie Brochere star. More as it comes.