The play The King in Yellow first appeared in France around 1895, without an author. All available copies of the book were quickly seized and destroyed by the government. Some survived, and are often popular among artists.
The play centers on the tragedy of Carcosa, a city of ambiguous location, which is visited by The King in Yellow, who may be an Avatar of Hastur. The reader is invariably haunted by the story, and begins to see parallels between the characters and action of the play with his waking life.