Question: Who wrote the book upon which the plot of the Amityville Playhouse is associated?

Context articles: The Amityville Playhouse
Simin Daneshvar
Old Angel Midnight
Jesse A. Shipp
The Amityville Horror
Adrantus
Amityville Death House
The Stone Sky
Having It All (musical)
La Lecture

The Amityville Playhouse is a 2015 horror film and is loosely based on "The Amityville Horror" but only using the location as a plot point.
 Instead of the usual 112 Ocean Avenue house, it is about a haunted theatre in Amityville.
 It had a limited theatrical release and was released on DVD in the UK April 13, 2015 with a US release on June 23, 2015.
 The film was directed by John R. Walker and co-written with Steve Hardy.
Simin Dāneshvar (Persian: سیمین دانشور‎ ‎ )‎ (28 April 1921 – 8 March 2012) was an Iranian academic, novelist, fiction writer and translator, largely regarded as the first major Iranian woman novelist.
 Daneshvar had a number of firsts to her credit.
 In 1948, her collection of Persian short stories was the first by an Iranian woman to be published.
 The first novel by an Iranian woman was her "Savushun" ("Mourners of Siyâvash", also known as "A Persian Requiem", 1966), which went on to become a bestseller.
 "Daneshvar's Playhouse", a collection of five stories and two autobiographical pieces, is the first volume of translated stories by an Iranian woman author.
 Being the wife of the famous iran writer Jalal al-Ahmad she had a profound influence on his writing, she wrote the book "the Dawn of Jalal" in memory of her husband.
 Simin was also a very good translator, of her translations we can name "The Cherry Orchard" by Anton Chekhov and "The Scarlet Letter" by Nathaniel Hawthorne.
 Her last book is currently lost and was supposed to be the last book of her trilogy which started with "the lost island".
 Al-Ahmad and Daneshvar never had a child.
Old Angel Midnight is a long narrative poem by American novelist and poet Jack Kerouac.
 It was culled from five notebooks spanning from 1956 to 1959, while Kerouac was fully absorbed by his studies of Buddhism and Buddhist philosophy.
 Kerouac initially experimented with Old Angel Midnight (then called "Lucien Midnight") in 1953 in his diary titled "1953.
 Notes again."
 In entries dated from November 20 to December 3, 1953, he made notes on "Lucien Midnight" which was to be originally conceptualized in what he called "book movie" form, when he closed his eyes and projected onto paper a cinematic sense of what he heard.
 A bookmovie, he explained in Some of the Dharma, is a "prose concentration camera-eye visions of a definite movie of the mind with fade-ins, pans, close-ups, and fade-outs."
 Kerouac's notes on Lucien Midnight were written while staying in the Lower East Side where he initially heard sounds coming through a tenement window from the wash court below.
 He then heard voices coming from kitchens of the other occupants in nearby apartment buildings and a man named Paddy arriving home drunk, and even a junky stirring in his bed.
 Kerouac conceptualized an idea of developing a work based on James Joyce’s experimental novel "Finnegans Wake" (not "Ulysses" as indicated by Ann Charters in her introduction to "Old Angel Midnight" for Grey Fox Press) where the “sounds of the universe” became the chief “plot” with all of its associated “neologisms, mental associations, puns and wordmixes” that stewed a plethora of languages and “nonlanguages.”
 Kerouac determinedly “scribbled out in a strictly intuitional discipline at breakneck speed” the fledgling prose that would finally comprise the finished book for City Lights's Pocket Poet series eight years later.
 Kerouac's one dogma was to compose Lucien Midnight strictly in pencil by candlelight.
 Lucien Midnight differs from his sketching method of writing because it is based upon an aural experience, and not visual.
 The bookmovie approach was abandoned in 1953 in favor of a different approach he had stylistically achieved by 1956.
Jesse Allison Shipp, Sr. (March 24, 1864 in Cincinnati, Ohio - June 1934) was an African-American actor, playwright, and theatrical director, who is best remembered as a pioneer African-American writer of musical theater in the United State, and as the author of the book upon which the landmark play "In Dahomey" was based.
 Shipp played an influential role in expanding black theater beyond its minstrel show origins and is recalled as perhaps the first African-American director of a Broadway performance.
The Amityville Horror is a book by American author Jay Anson, published in September 1977.
 It is also the basis of a series of films released from 1979 onwards.
 The book is claimed to be based on the paranormal experiences of the Lutz family, but has led to controversy and lawsuits over its truthfulness.
Adrantus (Ancient Greek: Ἄδραντος ), or Ardrantus or Adrastus, was a contemporary of Athenaeus who wrote a commentary in five books upon the work of Theophrastus, entitled Περὶ Ἠθῶν , to which he added a sixth book upon the Nicomachean Ethics of Aristotle.
Amityville Death House is a 2015 direct-to-video  horror film.
 The film is based on the 1977 novel "The Amityville Horror".
 The film follows the trend of films based on The Amityville Horror having little to nothing to do with the events in the book and only using the location and the DeFeo murders and the 112 Ocean Avenue house as a plot point.
 The film was directed by Mark Polonia, one of the Polonia brothers.
 The film uses a relatively unknown cast with the exception of Eric Roberts as "The Dark Lord".
The Stone Sky is a 2017 science fantasy novel by N. K. Jemisin.
 It is the third volume in the Broken Earth series, following the Hugo Award for Best Novel-winning "The Fifth Season" and "The Obelisk Gate".
 Reviews of the book upon its release were highly positive, with some speculating that it would win Jemisin a third consecutive Hugo.
Having It All is a 2011 American musical with music by John Kavanaugh, book by David Goldsmith and Wendy Perelman, and lyrics by David Goldsmith (lyricist) based on an idea by Wendy Perelman.
 The plot concerns five women waiting in an airport lounge for a continually delayed plane.
 The musical was nominated in the Musical category in the 2011 Ovation Awards.
 The musical had a second run at the Laguna Playhouse, Laguna Beach 2013.
La Lecture (or Reading) is a painting by Spanish artist Pablo Picasso completed in January 1932.
 The oil painting depicts Picasso's mistress and muse, Marie-Thérèse Walter, asleep with a book upon her lap.
 The painting led to the breakup of Picasso's marriage to Olga Khokhlova after she saw it at a retrospective exhibition and realised that the facial features were not her own.
 The painting went to auction in 1989 and in 1996, where it failed to sell.
 In January 2011, it was announced that "La Lecture" would be going to auction on 8 February.
 The painting, which had not been seen in Europe since the exhibition, was then displayed at Sotheby's in Paris.