Question: Who was the author of the 2006 novel that was adapted into a 2013 horror movie in which Shane Hart was an extra?

Context articles: World War Z (film)
Boileau-Narcejac
Shane Hart
Torture Chamber
The Last Horror Movie
Rondo Hatton
The Hospital (2013 film)
Pro Wrestlers vs Zombies
Charles Cyphers
Richard Carmen

World War Z is a 2013 American action horror film directed by Marc Forster.
 The screenplay by Matthew Michael Carnahan, Drew Goddard, and Damon Lindelof is from a screen story by Carnahan and J. Michael Straczynski, based on the title of the 2006 novel of the same name by Max Brooks.
 The film stars Brad Pitt as Gerry Lane, a former United Nations investigator who must travel the world to find a way to stop a zombie pandemic.
Boileau-Narcejac is the "nom de plume" by which French crime fiction writers Pierre Boileau (28 April 1906 – 16 January 1989) and Pierre Ayraud, aka Thomas Narcejac (3 July 1908 – 9 June 1998) collaborated.
 A number of their publications were adapted for cinema, including "Celle qui n'était plus", as "Les Diaboliques" (1955), directed by Henri-Georges Clouzot, and "D'entre les morts", as "Vertigo" (1958), directed by Alfred Hitchcock.
 They also notably adapted the novel "Les yeux sans visage" by Jean Redon into the horror movie known in English as "Eyes Without a Face" (1960).
Shane Hart is an English extra.
 He appeared in "World War Z" (2013), "" (2014) and "Hummingbird" (2014).
Torture Chamber is a 2013 horror film written and directed by Dante Tomaselli.
 The movie first released on October 10, 2013 at the Sitges Film Festival and was released onto DVD on January 28, 2014.
 The film stars Vincent Pastore, Christie Sanford, and Lynn Lowry, and follows a family trying to save a teen boy from demonic possession.
 This marks a change from Tomaselli's usual horror formula, as prior films showed adults in the role of monster.
The Last Horror Movie is a 2003 British found footage horror film directed by Julian Richards.
 On 24 August 2003 it premiered at the London FrightFest Film Festival and stars Kevin Howarth and Mark Stevenson.
 "The Last Horror Movie" was released onto DVD through Fangoria's "Gore Zone" label on 7 December 2004.
Rondo Hatton (April 22, 1894 – February 2, 1946) was an American soldier, journalist and occasional actor with a minor career playing thuggish bit and extra parts in Hollywood B-movies, culminating in his elevation to horror movie star-status with Universal Studios in the last two years of his life, and posthumously as a movie cult icon.
 He was known for his unique facial features, which were the result of acromegaly, a syndrome caused by a disorder of the pituitary gland.
 He was born in Hagerstown, Maryland, to Missouri-born teachers.
The Hospital is a 2013 horror film co-directed by Tommy Golden and Daniel Emery Taylor.
 Having a limited US release in March 2013, the film has subsequently screened at various horror film festivals, was presented at Cannes Film Festival, and took home the "Scariest Movie" award at Germany's largest genre festival, Movie Days, in Dortmund.
Pro Wrestlers vs Zombies (also known as Cody Knotts' Pro Wrestlers vs Zombies) is a 2013 horror film that was directed by Cody Knotts.
 An early version of the film was shown at an international horror festival in Whitby, England in October 2013, and the movie was released to DVD on March 28, 2014 along with a limited theatrical release.
 The movie was funded partly through a successful "Kickstarter" campaign and through private funds from three investors and stars several former WWE, and current TNA wrestlers that portray themselves fighting against a horde of zombies.
Charles Cyphers (born July 28, 1939) is an American actor who has starred in many films and on television.
 He is known in the horror movie community for his work in the films of John Carpenter, especially his role as Sheriff Leigh Brackett in Carpenter's 1978 hit horror movie "Halloween".
 He reprised this role in the 1981 sequel "Halloween II".
 He is not related to actor Jon Cypher, alongside whom he starred in "Hill Street Blues".
Richard Carmen (born July 1968, Colorado Springs, Colorado) is an American character actor.
 He is known for his leading role in the 2007 Sundance film Zoo where he played the main character's brother.
 Richard also appeared in two short films featured on the Fox reality series On The Lot and a role in the 2009 horror movie which played at SIFF.
 Richard also starred as Vance in the horror movie "The Taken" (2010).
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 In addition, he was an actor and assistant director in "Bound to be Different" (2011) and "Eden" (2012).