Zachary Quinto Dr. Oliver Thredson Actor Joseph Fiennes Monsignor Timothy Howard Actor Sarah Paulson Lana Winters Actor Evan Peters Kit Walker Actor Lily Rabe Sister Mary Eunice Actor Lizzie Brocheré Grace Actor James Cromwell Dr. Arthur Arden Actor Jessica Lange Sister Jude Actor Frances Conroy Unnamed Patient , Shachath Guest Star Clea Duvall Wendy Peyser Guest Star Britne Oldford Alma Walker Guest Star Robin Bartlett Dr. Miranda Crump Guest Star Naomi Grossman Pepper Guest Star Jack Conley Officer Woods Guest Star Lorinne Vozoff Used Bookstore Owner Guest Star Deirdre Lovejoy Lana's Host Guest Star Elizabeth Bond Rena Guest Star Jon Paul Burkhart Percy Guest Star Mark Espinoza Jorge Guest Star Emily Johnson Nurse Guest Star Lynn Ann Leveridge Battle-Axe Guest Star Ryan Murphy Executive Producer Brad Falchuk Executive Producer Dante Di Loreto Executive Producer Tim Minear Executive Producer