Abigail is a horror-themed concept album released in 1987 by heavy metal band King Diamond, led by the musician of the same name. It is the second overall album and first ever concept album in their discography (or at least in King Diamond’s solo discography, for he has been making several albums with Mercyful Fate at this time).
The story revolves around a man named Jonathan La'Fey and his newlywed wife Miriam Natias as they, against the warnings expressed by seven mysterious horsemen, move in to a dark and gloomy mansion that Jonathan inherited. The night of their move, he’s visited by the ghost of his relative, Count de La'Fey. The Count shows Jonathan to a vault holding the sarcophagus of Abigail La'Fey, the stillborn illegitimate child of The Count’s unfaithful wife, who both died 68 years previous. It’s then revealed by The Count that Abigail’s spirit has taken hold of Miriam’s soul, and will soon be reborn unless he takes her life.
Abigail is considered to be one of the best and most influential albums in metal, especially for one with a horror theme as well-executed as this. It’s also one of their highest-selling albums ever, selling over 175,000 copies in North America alone and becoming the first album under Roadrunner Records to break through the Billboard 200.
15 years later, King Diamond produced a sequel to this album entitled Abigail II: The Revenge.