A pair of novice nuns enter Briarcliff's infirmary and one of them attends to Grace. She finds that Grace is suffering from intense fever and upon removing her blankets, discovers that she is hemorrhaging vaginally. They decide that Arden should not be called since rumor has it he is the one that performed the botched surgery. They try to revive Grace from near-fatal blood loss as she is visited by a veiled angel dressed in black. Grace tells the angel, "I'm ready," and the angel sprouts two large, black, feathered wings. Grace is resuscitated just as the angel is about to give her the "kiss of death" and the vision fades. She tells the nuns that they should have let her die.
Sister Mary Eunice enters Dr. Arden's study while he is repotting plants. She informs him of Grace's near-death and blames Arden for Grace's condition. He denies his involvement and says that he performed no such surgery on her. He accuses her of being disrespectful of his authority and slaps her. Sr. Mary Eunice warns him against touching her again. Arden raises his hand to her and she telekinetically throws him across the room.
A nun in the kitchen is slicing bread. Behind her at a table sits Miles, an alcoholic man suffering from auditory hallucinations. The voices in his head taunt him with things like, "You know what you need to do," "Somebody's got to be the hero, so why not you?" "For once in your miserable life." He cries out, "Shut the Hell up!" to the voices and the nun stops slicing the bread. She scolds him and continues. His hallucinations continue until he mentions to the nun that his meat is not cut correctly and that there must be something wrong with the slicer. He offers to look at the machine and the nun backs away, allowing him to take a look. He rolls up his sleeves and proceeds to slice his own wrist with the blade of the slicer. Sister Mary Eunice comes to the scene and notices a strange word on the wall, written in Miles' blood. She informs the guards that it is a name in ancient Aramaic. She asks Miles how he knows the name and asks if he summoned "her". Miles does not know what she is talking about and is taken to solitary.
In the cell, the guards tell him not to touch his stitches. They leave and it is lights out in the Asylum. The dark angel appears in his cell and he begs to be let go. He undoes one of his bandages and pulls out the stitches, allowing for blood to pour from his arm. The angel kisses him and he dies, but the angel is aware of someone else in the room. It turns out to be Sister Mary Eunice, who tells the Angel that she is "just a simple nun". The angel knows that there is something darker about her and says she is like her but, "fallen". She calls her "cousin" and the nun denies this relation. The angel, who identifies herself as Shachath, speaks to Sr. Mary Eunice's human side that has been overtaken and the host (the original sister) reacts by crying out, "Will you release me? Can you release me?" The parasite demon takes control again saying, "Oh Shut up, you stupid sow!" She looks at the angel and says, "She likes it here. We like it. And we have work left to do." "So do I," the angel replies, leaving Sister Mary Eunice alone.
Arden examines Grace and tells her of the accusations against him. He tells her that he is going to take care of her and that she will live, "if only to set the record straight." He injects her with an unknown medicine.
Kit meets with his lawyer, who tells him that Grace is a patient in a mental institution so it is not likely many people would believe her. He also says she's very sick and may not even make it to the trial. He tells him that Dr. Thredson set him up, but unfortunately, there is nothing he can do. A change comes over him, and he starts to glance around the room while his lawyer speaks. He looks at the window and then at objects on the desk. He picks up a 3-hole-punch and attacks his lawyer with it, knocking him to the ground and beating him.
Shachath visits Lana after Dr. Thredson has left. She offers Lana the kiss and Lana nearly submits to the temptation. She changes her mind and the angel leaves as Dr. Thredson comes back into the basement. He tells Lana that he is sorry for what he has done and that something had happened between them that he did not understand. He tells her that perhaps he should not have brought her there at all. Lana looks hopeful until he offers to either kill her by cutting her throat or strangling her. He says that it does not actually matter how he kills her and brings out a syringe. He says that she will be able to see Wendy again. Lana fights him by shattering a framed picture of Wendy over his head and overpowers him. She injects him with the syringe, and he is momentarily knocked out. She retrieves the keys from his belt and unchains herself. As she runs up the stairs, Thredson gets up and tries to grab her. She pushes him back and he falls onto a table.
Once she is outside, she runs into the street and in front of a moving car. When the car stops she jumps inside, telling the driver to get away quickly. The driver asks Lana why she is running away and accuses her of being unfair to her boyfriend. Lana realizes that she is now in the car with another man who does not favor women. He tells her that his wife had cheated on him and lied to him and he had caught the two of them having sex in their own house. With that, he pulls out a gun and Shachath appears in the backseat of the car. Lana looks back and says that she does not want to die, "not after everything". Shachath looks at the driver and the driver shoots himself. Lana tries to grab the wheel but the car crashes.
Lana awakens back in Briarcliff in a head-brace. Sister Mary Eunice is watching over her. She informs her that the driver was killed in the accident and that Lana had sustained injuries.
Sister Jude is tending to a dying Sam Goodman in his hotel room. She attempts to call the police and while doing so, notices that there is a bottle of bourbon on the table. Meanwhile, the Angel comes to kiss the detective. Sister Jude turns to see that on the TV, there are newspaper clipping relating to the "girl in the blue dress". Underneath the paper is the word, "MURDERER" written in blood.
A hungover Judy awakens in a trashed hotel room to Terry (one of her band members) knocking on her door. He comes to inform her that she has been replaced in the band as a singer because she missed their show the previous night. She attempts to seduce him into changing his mind, but he denies her. As he leaves, he informs her that a detective wants her to call him to ask her about a hit-and-run case a few days prior. Judy panics and packs her things. She leaves and begins driving but decides to drink while she is on her way. She crashes her car and awakens in front of a statue of an angel. A nun approaches her car and asks if she is hurt.
The phone rings in Sam's hotel room. It is Sister Mary Eunice who claims to be Sister Jude's "conscience". She taunts Sister Jude with accusations that she was the one who killed Sam, telling her that the police will think he was, in fact, investigating Sister Jude for the murder of the "girl in the blue dress". She advises that Sister Jude never return to Briarcliff and that she should start running. She tells Jude that she left her the bottle of bourbon as well as a straight razor.
In a diner, Sister Jude sits down but gets up to go to the restroom. She washes her hands and takes out the straight razor. Sister Jude slits her left wrist and falls the floor, lying in a pool of her own blood. However, this turns out to simply be her imagination, for she walks out of the bathroom and sits across from Shachath.
She asks the angel why she was kept alive, despite prior suicide attempts. The angel tells her that she does not judge, but that Jude's "song" was different this time. Jude once tried to kill herself after her almost-husband left her the night before her wedding. She had apparently told him he had given her syphilis and that she could never have children. The angel tells Jude that "God had a plan" for her and that it was not yet time to die. Jude admits her failure in the eyes of God and says she is just a "drunken whore and a murderer." The angel tells Jude that "Peace is close". Jude replies, "I'm ready. Ready to do one last thing." A pair of the waitresses at the diner witness Jude talking to no one and decide that they should probably call Briarcliff, just so she can have a place to sleep.
Jude visits the family of the "girl in the blue coat". As they discuss the little girl, and as Jude is about to confess, a young woman in a nurse uniform enters the house. It turns out to be a grown Missy. Apparently, she was returned to her family with only a few broken bones. Jude reacts in a confused state and says that she prayed for Missy's soul ever since the accident. She recalls that the accident occurred around the time she decided to become a nun and that after it occurred, it inspired her to take her vows. Missy's mother informs Jude that her husband, Hank, had vowed to avenge what had happened to Missy, but it turns out that they accepted that whoever had left her there would suffer on their own.
A nun tries to give Lana medication but Lana argues that she must stay awake and talk to Sister Jude. Sister Mary Eunice enters and Lana informs her of what happened to her. She offers the truth that Kit is innocent and that Dr. Thredson is Bloody Face. Sr. Mary Eunice recalls the night of the exorcism and remembers the "Devil" saying to Thredson, "I love your work, Bloody Face." Lana begs Mary Eunice to call the police, and she informs Lana that she believes her and that she is, at last, safe.
Sister Mary Eunice leaves Lana and converses with Frank, the guard, informing him that Lana is very confused and has claimed that Dr. Thredson attacked her and that Kit is innocent. Frank tells Mary Eunice that Kit escaped custody and that he is on the loose. The police have ordered that if he is apprehended, one should "shoot on sight".
Kit is seen in the Death Chute, having returned to Briarcliff by way of the secret exit close to the woods. One of the mutants has trailed Kit inside. A healthier Grace is in the kitchen. She tells a nun who is wondering why she is not in bed that she is "Dr. Arden's Little Miracle". The nun requests that Grace return to her room but Grace begs to stay. The nun agrees and leaves the room. Kit appears behind Grace and the two embrace. Kit tells her that he is going to take her away, but as they leave, the nun returns and starts to cry for help. As she does, the creature attacks the nun and rips her throat out. He throws her body away and advances to Kit.
He pulls the hooked attachment from an industrial dough mixer and disembowels the monster. It lets out an inhuman scream and falls to the floor, dead. Frank enters and points a gun at Kit. Kit is unable to explain the situation and as Frank shoots, Grace jumps in front, catching the bullet in her chest. Kit is taken away as Grace lays on the kitchen floor, dying.
The Dark Angel appears to Grace and asks her is she is ready. Grace says, "Yes," and the Angel sprouts her dark wings. The Angel kisses her, and Grace says, "I'm free."
- Sister Mary Eunice to Arthur Arden: "You really think you are in charge?"
- Lana Winters to Shachath: "I'm not ready to die."
- Sister Jude to Shachath: "I just need to do one last thing."
- Joseph Fiennes (Timothy Howard) is credited but does not appear.
- What actually happened the night Sister Jude believed she had killed Missy Stone (The Girl In The Blue Dress)?
- Is Lana really safe from Dr. Thredson?
- Will Sister Mary Eunice be able to break away from the demon inside her?
- If the demon knew Thredson was Bloody Face while it possessed Jed, why is this new information to it while it possesses Sr. Mary Eunice?
- The position of Thredson's body as the demon identifies him as Bloody Face appears to place the flashback at the only moment in Tricks and Treats when the two are alone together, as the Monsignor is pulling the enraged Sister Jude out of the room. Thredson then immediately "sedated" the demon-possessed boy, who promptly died. Did Thredson kill the boy with the injection to keep his own identity secret?