Question: Whose novel inspired the 2013 American paranormal romantic zombie comedy film in which Teresa Palmer played the leading role?
Context: Zombie eXs is a 2013 American zombie comedy film written Jean Cohen and George Smith, directed by George Smith, starring Aex Hammel-Shaver, Scott Keebler and Madison Hart and distributed by Alternative Cinema/Bloody Earth Films.  The film is loosely based on director Smith's true life experiences with dating women. Stranded is a 2013 American paranormal investigation reality television series that premiered on the Syfy network February 27, 2013 and is hosted by Josh Gates of "Destination Truth".  The show is produced by executive producers Brad Kuhlman, Casey Brumels and Josh Gates for Ping Pong Productions, and Jason Blum of Blumhouse Productions, the latter best known for the "Paranormal Activity" film franchise.  The show has been compared to MTV's paranormal competition show "Fear". Stalled is a 2013 British zombie comedy film directed by Christian James.  It stars Dan Palmer, who also wrote the screenplay, as a man confined to a bathroom stall after zombies attack.  Produced by Richard Kerrigan and Daniel Pickering, the film's cast also includes Mark Holden and Antonia Bernath.  It has been screened at several film festivals and was scheduled to be released on home video in 2014. Palomita Blanca (Spanish for "Little White Dove") is a 1971 novel written by Enrique Lafourcade.  More than fifty editions (including "reprintings") have been published, making the novel the most widely sold novel in the history of Chilean literature, with more than a million copies sold.  It was written at a conflictive time in Chile's history (events leading into the election of Salvador Allende as President) and it was a sentimental time in world popular culture (events such as rock concerts and drug use).  Most critics saw the novel as a knee-jerk response to Erich Segal's "Love Story".  A New York Times No. 1 bestseller, Segal's book became the top selling work of fiction for all of 1970 in the United States, and was translated into more than 20 languages worldwide.  The motion picture of the same name was the number one box office attraction of 1971.  Thus most media comments in Santiago called Lafourcade's novel "the Chilean love story."  Lafourcade's marriage with Marta Blanco had ended three years earlier, and he reportedly wrote the novel inspired by his later "pareja," about whom he remained quite secretive.  A film based on the novel was made in 1973 by Raúl Ruiz, which was at one time believed lost forever, but a print was later found in the vaults of ChileFilms. The Choice is a 2016 American romantic drama film directed by Ross Katz and written by Bryan Sipe, based on Nicholas Sparks' 2007 novel of the same name about two neighbors who fall in love at their first meeting.  The movie stars Benjamin Walker, Teresa Palmer, Maggie Grace, Alexandra Daddario, Tom Welling and Tom Wilkinson. The Night Shift is a 2011 American zombie comedy film directed and written by Thomas Smith.  It stars Khristian Fulmer as a cemetery watchman who must contend with undead residents and paranormal occurrences. Warm Bodies is a 2013 American paranormal romantic zombie comedy film based on Isaac Marion's novel of the same name.  Directed and written by Jonathan Levine, the film stars Nicholas Hoult, Teresa Palmer, Analeigh Tipton and John Malkovich. Ernie Lindsey is an American novelist whose novel "Sara's Game" (2012) became a "USA Today" and Amazon Kindle bestseller.  He also writes paranormal suspense novels under the pen name Desmond Doane. Breathers: A Zombie’s Lament (Broadway Books) is a romantic zombie comedy novel by first-time author S. G. Browne, published in 2009.  The story is told from the point of view of Andy Warner, a newly revived zombie who lives in his parents' basement, attends Undead Anonymous meetings, and is in love with another zombie, Rita, who killed herself by slashing her own throat.  As he seeks to survive in a world that hates zombies, Andy must regularly consume formaldehyde while all he and every zombie really wants is to eat human flesh, which is forbidden. Teresa Mary Palmer (born 26 February 1986) is an Australian actress, writer, producer and model.  Palmer made her film debut in 2006, when she appeared in the suicide drama "."  In 2013, she played the leading role in the zombie romantic comedy "Warm Bodies"; later on, Palmer portrayed the fictional character of Rebecca in the 2016 supernatural horror film "Lights Out".  She has also appeared in films such as "December Boys", "The Sorcerer's Apprentice", "I Am Number Four", "Take Me Home Tonight", "Love and Honor", "The Ever After" (which she co-wrote and co-produced with her husband, Mark Webber), "Kill Me Three Times", the 2015 remake of "Point Break", "Triple 9", "The Choice", and the Mel Gibson-directed war film "Hacksaw Ridge".
Answer: Isaac Marion