Cabal

1986, he wrote the novella The Hellbound Heart.

1988, he wrote the novella Cabal, later filmed by Barker himself as Nightbreed.

1989, The Great and Secret Show, his first book of the Books of the Art series, epic, mythic, Americans-set dark fantasy.

1981, he wrote Imajica, a massive, multi-dimension fantasy that many consider his most ambitious novel, a story of reconciliation, identity, and the hidden architecture of the universe.

Nightbreed: at last, [thudding] the night has a hero.

Outstanding.

Based off of his 1988 novella Cabal, troubled young man Aaron Boone, plagued by nightmares of monsters, is manipulated by his psychiatrist, Dr. Decker, who is a secret serial killer, into believing he is a murderer.

Boone seeks the mythical city of Midian, a subterranean sanctuary for the Nightbreed, shapeshifting outcasts and monsters.