In a flashback, Vanessa meets The Cut-Wife, who teaches her how to harness her powers. Isolated at her lonely cottage on the moors, The Cut-Wife quickly realizes the extent of Vanessa's powers and warns her of the danger that lies ahead - and the evil that pursues her.
Ethan Chandler, Dr. Frankenstein, Dorian Gray, Sir Malcolm, the Creature, and Lily must each face their own monstrous selves. But for Vanessa Ives, accepting her demons could exact a terrible cost and plunge the world into darkness.
Vanessa Ives and her allies find themselves locked in epic battle against an unholy evil; Sir Malcolm falls under the spell of a bewitching temptress; Ethan's big secret becomes known as his past comes back to haunt him.
Vanessa Ives battles an evil demon determined to possess her; Sir Malcolm Murray tries to rescue his cursed daughter; Ethan Chandler becomes enmeshed with a group of vampire hunters and falls for a doomed local prostitute.