Question: Who wrote the novel which inspired Mark Herman to write and direct "The Boy in the Striped Pyjamas"?

Context articles: David Thewlis
Amber Beattie
Johnnie Fingers
Asa Butterfield
Mark Herman
Gemma Rovira Ortega
The Boy in the Striped Pyjamas (film)
The Boy in the Striped Pyjamas
Rupert Friend
David Fickling Books

David Thewlis (born David Wheeler; born 20 March 1963) is an English actor, director, screenwriter, and author.
 His most commercially successful role to date has been that of Remus Lupin in the "Harry Potter" film series.
 Other notable performances include the films "Naked" (for which he won the Best Actor award at Cannes Film Festival), "Dragonheart", "Kingdom of Heaven", "The Boy in the Striped Pyjamas", "The Theory of Everything", "Black Beauty", "Macbeth" (as King Duncan) and "Wonder Woman".
 He has also done voice work in the films "James and the Giant Peach" (1996), "The Miracle Maker" (2000), and "Anomalisa" (2015).
 Thewlis has combined major motion picture work with prominent television roles, including playing Cyrus Crabb in the television miniseries "Dinotopia" and antagonist V.M. Varga in the third season of "Fargo."
Amber Louisa Oatley Beattie (born 22 July 1993) is an English actress and singer, mainly known for her roles as Lulu Baker in "Jinx" (2009) and as Gretel in "The Boy in the Striped Pyjamas" (2008).
Johnnie Fingers (born John Peter Moylett, 10 September 1956) is an Irish keyboardist and co founding member (along with Bob Geldof) of the new wave band, The Boomtown Rats.
 He was notable for his attire of striped pyjamas on stage as well as his melodic piano style.
Asa Maxwell Thornton Farr Butterfield ( ; born 1 April 1997) is an English actor.
 He began his acting career at the age of 9 in the television drama "After Thomas" (2006) and the comedy film "Son of Rambow" (2007).
 He became known for playing the main character Bruno in the Holocaust film "The Boy in the Striped Pyjamas" (2008), for which he received nominations for the British Independent Film Award and the London Film Critics Circle Award for Young British Performer of the Year at the age of 11.
 He also played the young Mordred in the hit BBC TV Series "Merlin" (2008–2009) and Norman in the fantasy film "Nanny McPhee and the Big Bang" (2010).
Mark Herman (born 1954) is an English film director and screenwriter best known for writing and directing the 2008 film "The Boy in the Striped Pyjamas".
Gemma Rovira Ortega (born in 1974) is an English-Spanish translator from Barcelona, known for translating the Harry Potter series, The Boy in the Striped Pyjamas by John Boyne and The Kingkiller Chronicle series by Patrick Rothfuss into Spanish.
The Boy in the Striped Pyjamas (released as The Boy in the Striped Pajamas in the United States; see spelling differences) is a 2008 British-American historical period drama based on the novel of the same name by Irish writer John Boyne.
 Directed by Mark Herman, produced by BBC Films and Heyday Films, and distributed by Miramax (North America) and Walt Disney Studios Motion Pictures (International), the film stars Vera Farmiga, David Thewlis, Asa Butterfield, and Jack Scanlon.
 It was released on 12 September 2008 in the United Kingdom.
The Boy in the Striped Pyjamas is a 2006 Holocaust novel by Irish novelist John Boyne.
 Unlike the months of planning Boyne devoted to his other books, he said that he wrote the entire first draft of " The Boy in the Striped Pyjamas" in two and a half days, barely sleeping until he got to the end.
 As of March 2010, the novel had sold more than five million copies around the world.
 In both 2007 and 2008, it was the best selling book of the year in Spain, and it has also reached number one on the "New York Times" bestseller list, as well as in the UK, Ireland, and Australia.
 The book was adapted in 2008 as a film of the same name.
Rupert William Anthony Friend (born 9 October 1981) is an English actor, director, screenwriter and producer.
 He is best known for his roles as Mr. Wickham in the 2005 film "Pride and Prejudice", Lieutenant Kurt Kotler in the 2008 film "The Boy in the Striped Pyjamas", Prince Albert in the 2009 film "The Young Victoria", and Agent 47 in the 2015 film "".
 From 2012 to 2017, he portrayed Peter Quinn on the Showtime series "Homeland", for which he was nominated for an Emmy in 2013.
David Fickling Books Ltd (DFB) became an independent publishing house in July 2013 following 12 years with Scholastic and then Random House.
 They have published several prize-winning and bestselling books including "Lyra's Oxford" (from the world of His Dark Materials) by Philip Pullman, "The Curious Incident of the Dog in the Night-time" by Mark Haddon, "The Boy in the Striped Pyjamas" by John Boyne, "Bing Bunny" by Ted Dewan, "Pants" by Nick Sharratt and Giles Andreae, "Before I Die" by Jenny Downham, "Trash" by Andy Mulligan (shortly to be a major movie with script by Richard Curtis) and "A Boy and a Bear in a Boat" by Dave Shelton.