Horror is a genre of fiction which is intended to, or has the capacity to frighten, scare, disgust, or startle their readers or viewers by inducing feelings of horror and terror. Literary historian J. A. Cuddon has defined the horror story as "a piece of fiction in prose of variable length... which shocks or even frightens the reader, or perhaps induces a feeling of repulsion or loathing". It creates an eerie and frightening atmosphere. Horror is frequently supernatural, though it can be non-supernatural. Often the central menace of a work of horror fiction can be interpreted as a metaphor for the larger fears of a society.
The genre of horror has ancient origins with roots in folklore and religious traditions, focusing on death, the afterlife, evil, the demonic and the principle of the thing embodied in the person. These were manifested in stories of beings such as witches, vampires, werewolves and ghosts.
18th century Gothic horror drew on these sources with the seminal and controversial The Castle of Otranto (1764) by Horace Walpole. This marked the first incorporated elements of the supernatural instead of pure realism. In fact, the first edition was published disguised as an actual medieval romance from Italy discovered and republished by a fictitious translator. Once revealed as contemporary, many found it anachronistic, reactionary, or simply in poor taste — but it proved to be immediately popular. That first novel of Gothic horror inspired such works as Vathek (1786) by William Beckford, A Sicilian Romance (1790), The Mysteries of Udolpho (1794) and The Italian (1796) by Ann Radcliffe and The Monk (1797) by Matthew Lewis. A significant amount of horror fiction of this era was written by women and marketed at a female audience, a typical scenario being a resourceful female protagonist menaced in a gloomy castle.