Question: Which magazine, the British response to magazines such as "Playboy" and "Penthouse" did horror author Graham Masterton edit?

Passages:
The Manitou is a 1978 American horror film produced and directed by William Girdler.  It stars Tony Curtis, Michael Ansara and Susan Strasberg.  It was based on the 1976 novel by Graham Masterton, which was inspired by an old legend about the American Indian Manitou spiritual concept. Graham Masterton (born 16 January 1946 in Edinburgh) is a British horror author.  Originally editor of "Mayfair" and the British edition of "Penthouse", Graham Masterton's first novel "The Manitou" was released in 1976.  This novel was adapted in 1978 for the film "The Manitou".  Further works garnered critical acclaim, including a Special Edgar Award by the Mystery Writers of America for "Charnel House" and a Silver Medal by the West Coast Review of Books for "Mirror".  He is also the only non-French winner of the prestigious Prix Julia Verlanger for his novel "Family Portrait", an imaginative reworking of the Oscar Wilde novel "The Picture of Dorian Gray".  Masterton was also the editor of "Scare Care", a horror anthology published for the benefit of abused children in Europe and the USA. The Quiet American is a 1955 novel by English author Graham Greene which depicts French colonialism in Vietnam being uprooted by the Americans during the 1950s.  The novel implicitly questions the foundations of growing American involvement in Vietnam in the 1950s and is unique in its exploration of the subject topic through the links among its three main characters - Fowler, Pyle and Phuong.  The novel has received much attention due to its prediction of the outcome of the Vietnam War and subsequent American foreign policy since the 1950s.  Graham Greene portrays a U.S. official named Pyle as so blinded by American exceptionalism that he cannot see the calamities he brings upon the Vietnamese.  It was adapted as two different movies during 1958 and 2002.  The book uses Greene's experiences as a war correspondent for "The Times" and "Le Figaro" in French Indochina 1951–1954.  He was apparently inspired to write "The Quiet American" during October 1951 while driving back to Saigon from Ben Tre province.  He was accompanied by an American aid worker who lectured him about finding a "third force in Vietnam” . Mayfair is a British adult magazine for men.  Founded in 1965, it was designed as a response to US magazines such as "Playboy" and "Penthouse", which had recently launched in the UK.  For many years it claimed the largest distribution of any men's magazine in the UK.  It is a softcore magazine and is thus available in newsagents, although some larger retailers require a modesty bag to hide the cover. The End of the Affair (1951) is a novel by British author Graham Greene, as well as the title of two feature films (released in 1955 and 1999) that were adapted from the novel. Some Kind of Fairy Tale is a 2012 novel by the British author Graham Joyce.  A work of speculative fiction, it won the British Fantasy Society's Fantasy Novel of the Year award (the Robert Holdstock Award) in 2013.  Film rights to the novel have been sold and a potential movie is in the development stage. <P3-S0> The Horror Zine is an American fantasy and horror fiction pulp magazine first published in July 2009. <P3-S1>  The magazine was set up in Sacramento by Jeani Rector, a novelist and short-story writer with a taste for the macabre. <P3-S2>  She has been the editor for the magazine's entire run, and is assisted by Dean H. Wild. <P3-S3>  "The Horror Zine" has published established, professional writers, including Graham Masterton, Joe R. Lansdale, Piers Anthony, Ramsey Campbell, Elizabeth Massie, Simon Clark, Tom Piccirilli, Melanie Tem, and Bentley Little. Our Man In Havana (1958) is a novel set in Cuba by the British author Graham Greene.  He makes fun of intelligence services, especially the British MI6, and their willingness to believe reports from their local informants.  The book predates the Cuban Missile Crisis, but certain aspects of the plot, notably the role of missile installations, appear to anticipate the events of 1962. <P1-S0> Pubic Wars, a pun on the Punic Wars, is the name given to the rivalry between the pornographic magazines "Playboy" and "Penthouse" during the 1960s and 1970s. <P1-S1>  Each magazine strove to show just a little bit more than the other, without getting too crude. <P1-S2>  The term was coined by "Playboy" owner Hugh Hefner. <P1-S3>  In 1950s and 1960s America, it was generally agreed that nude photographs were not pornographic unless they showed pubic hair or genitals. <P1-S4>  "Respectable" photography was careful to come close to, but not cross over, this line. <P1-S5>  Consequently, the depiction of pubic hair was "de facto" forbidden in U.S. pornographic magazines. Famine is a 1981 horror novel written by Scottish writer Graham Masterton.  The story is about a nationwide famine that sweeps America, rendering all sources of food contaminated in one way or another.

Supporting sentences:
 Originally editor of "Mayfair" and the British edition of "Penthouse", Graham Masterton's first novel "The Manitou" was released in 1976.  Founded in 1965, it was designed as a response to US magazines such as "Playboy" and "Penthouse", which had recently launched in the UK.