Terrifying evils blur the boundaries between reality and insanity at the Briarcliff Manor.

A new patient exposes Arden's past; Kit learns why Grace was admitted to Briarcliff.

Sister Jude employs a renowned Nazi hunter to gather evidence against Arden; Kit makes a surprising confession; Bloody Face is unmasked.

A murderous Santa wreaks havoc on Briarcliff; Sister Jude faces off with the devil; Arden has a shocking encounter in the death chute.

Grace tells Kit devastating news about the aliens' experiments on Alma; Dr. Thredson receives an unexpected visitor; the Monsignor goes to extreme lengths to silence Jude.

A deadly new inmate threatens Sister Jude's chance of release; Grace's obsession with the aliens turns violent.