Besieged by Marie Laveau’s army, Zoe unleashes a new power; Fiona and Myrtle clash over control of the coven; Madame LaLaurie is confronted by old ghosts.

Fiona’s choices rattle a decades-long truce between the Salem witches and Marie Laveau; the Council of Witchcraft pays a surprise visit to the academy with disturbing allegations.

Fiona takes on an unlikely protégé; a guilt-ridden Zoe tries to give Kyle his old life back; Madison has a fiery exchange with Joan Ramsey.

Fiona helps Zoe and Madison deal with a horrible tragedy; Delphine LaLaurie struggles to adjust to modern life; Cordelia faces a dark decision about her family.

A young girl discovers she possesses a strange genetic affliction tracing back to the dark days of Salem; Fiona Goode returns to town.

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

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

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.

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.

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

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

A mysterious little girl is abandoned at Briarcliff; the Monsignor makes a Faustian pact with Dr. Arden; the origin of Bloody Face is revealed.

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

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

A violent storm allows a group of patients to plan a daring escape; Sister Jude is haunted by her past.

An exorcist is called to Briarcliff to help save a troubled farm boy; Sister Jude’s darkest secret is revealed.

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

In the aftermath of family tragedy, Ben tries to take his child out of the Murder House. Meanwhile, Violet and Vivien accustom themselves to their new living arrangements, Constance raises Tate’s child as her own and a new family buys the house.

Vivien gives birth. Tate and Violet attempt to rid the house of some of its ghosts for good.

Violet learns about the rules of the house. The truth about Larry’s condition is explained. Constance is interrogated by the police.

One of history’s most famous murder victims pays the house a visit. Constance discovers more of Tate’s bad behavior.

The man in the rubber suit is revealed.

Moira persuades a buyer to make an offer while Constance and Larry work against her efforts.

Constance enlists Violet’s assistance with Tate. Ben helps a new patient confront his fears.

Tate comes face to face with his past, and Ben and Vivien are haunted by a new houseguest before Halloween night comes to an end.

The line between the living and the dead blurs on Halloween. Two of the house’s previous residents give the Harmons decorating advice.

Vivien learns the horrific truth about the house’s first residents and Ben’s visitor causes him to further unravel about what really happened in the haunted house. Constance and Moira have their history revealed.

Vivien and Violet get themselves caught in a dangerous situation. Meanwhile, Ben goes back to Boston to fix a mistake that he made.

A therapist and his family move across the country to escape their troubled past but quickly discover that their new home comes with its own horrific baggage.

Bertie’s circumstances change suddenly, leaving Edith uncertain whether to risk telling him the truth or keep her past a secret at all costs. Mary wonders if she can ever make peace with her sister as hostilities escalate, Spratt shows some hidden talents and Molesley’s first day as a teacher does not go according to plan. Mrs Patmore’s bed and breakfast attracts unwanted attention, leaving her in need of the Crawleys’ help.

The Crawleys watch Henry compete in a motor racing event, an occasion that leaves Mary reeling. Violet hatches a plan which surprises the family and delights Miss Denker, and learns more about Amelia’s intentions in befriending Isobel. Molesley and Daisy rise to the challenges of examination day, Andy’s secret is brought to light, Thomas feels isolated, and Mrs Patmore and Mrs Hughes teach Carson a lesson.

The house is made open to the public to raise money for the hospital, an act that divides opinions among the family and the servants. Tensions between Violet and Cora come to a head as a decision is made about the hospital takeover, Mr Dawes has a proposition for Molesley, and Baxter is thrown into turmoil by an unexpected letter. Carson is not happy with Thomas, while Mary and Edith hope to overcome their past and find new happiness with the men in their lives.

Neville Chamberlain visits Downton for dinner, and is drawn into Violet’s plan to save the hospital, with distressing consequences for everyone. Andy finds an unexpected confidante while helping Mr Mason move into Yew Tree Farm, Mary is uncertain if she has met her match, Edith meets Bertie Pelham in London, and Spratt comes to Denker’s aid. Mrs Hughes struggles to keep Carson happy, while Mary thinks secrets are being kept from her.

As Tom and Sybbie settle back into life at Downton, the family and servants are surprised by the return of another old friend in unexpected circumstances.

Preparations for the wedding of Mr Carson and Mrs Hughes are under way. Edith meets up with an old acquaintance. Spratt has something to hide.

Lady Mary’s meddling gets Mr Carson into trouble with Mrs Hughes. Cora and Violet lock horns over the hospital takeover plans. Robert has a tough decision to make.

It is now 1925, when secrets and rifts threaten the unity of the family, while those below stairs are faced with social changes.