Sister Mary Eunice is terrified to discover a dark angel at Briarcliff; Kit makes a bold move to be reunited with Grace.

The Monsignor takes an unlikely convert under his wing; Lana secures a new piece of evidence that can exonerate Kit; Dr. Arden witnesses a miraculous return.

The Monsignor confronts the Devil. Dr. Arden’s experiments reach a shocking conclusion. Dr. Thredson facilitates a surprising reunion for Kit.

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

Johnny sets out to complete his father's work; Lana leads the charge to finally shut down Briarcliff.