Ethan and Vanessa make their way to the Cut-Wife's cottage to get a weapon against the Nightcomers. Meanwhile, Brona goes out with Dorian.

While Evelyn torments Malcolm, Victor summons Ethan and Vanessa back to London to rescue their friend. Meanwhile, Brona learns Dorian's secret, and Caliban is betrayed.

Vanessa has to use all of her strength to try and defeat the demon.

Lily and Dorian pay a visit to a most unusual show, and Vanessa invites Sweet to a different show. Rusk sets out to track down Ethan and make sure that he hangs, and Henry demonstrates the efficacy of his potion for Victor.

Through hypnosis, Vanessa relives what happened to her in the Banning Institute, including the man who befriended her... and the spirits who tormented her.

Vanessa turns to old friend Ferdinand Lyle for help, who introduces her to a new ally. Meanwhile, Lily, Dorian and Justine put their plan in motion; and Ethan, Sir Malcolm and Hecate arrive at Jarod Talbot's ranch.

Ethan, Sir Malcolm and Kaetenay return to London, where Ethan searches for Dr. Frankenstein. Dr. Seward discovers Renfield's secret. Lily reveals a heartbreaking story from Brona Croft's past.

Season finale. Ethan learns the shocking truth about Kaetenay. Dr. Seward uses hypnosis on Renfield. Meanwhile, The Creature must make a moral decision as Sir Malcolm, Ethan, Kaetenay, Dr. Seward and Catriona battle to save Vanessa.