Details on his role were unavailable, but Murphy noted on Twitter that the Golden Globe winner will "tussle" with Jessica Lange's Sister Jude, one of the nuns who runs the insane asylum at Briarcliff Manor (aka this season's Murder House, of sorts).
McShane, whose credits also include Kings and Dallas, joins the expanding cast for Season 2, including returning players Sarah Paulson, Lily Rabe, Zachary Quinto and Evan Peters, along with newbies James Cromwell, Joseph Fiennes, Adam Levine and Lizzie Brochere, among others.
American Horror Story: Asylum premieres Wednesday, Oct. 17 at 10/9c on FX.
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