Graham Masterton is a British author known primarily for horror fiction. Originally editor of Mayfair and the British edition of Penthouse, his debut novel, The Manitou, was published in 1976. This novel was adapted in 1978 for the film The Manitou. His 1978 novel Charnel House and 1983 novel Tengu garnered positive critical reception, the former receiving a Special Edgar Award by the Mystery Writers of America and the latter being awarded with a silver medal by the West Coast Review of Books. Masterton was also the editor of Scare Care, a horror anthology published for the benefit of abused children in Europe and the United States.

Horror is a genre of fiction that is intended to disturb, frighten or scare. Horror is often divided into the sub-genres of psychological horror and supernatural horror, which are in the realm of speculative fiction. Literary historian J. A. Cuddon, in 1984, 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". Horror intends to create an eerie and frightening atmosphere for the reader. Often the central menace of a work of horror fiction can be interpreted as a metaphor for larger fears of a society.