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

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.

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