Question: Who wrote the books  the fantasy series Sophie Turner stars in was based on?

Context articles: All I Need Trilogy
Sophie Turner Laing
Sophie Turner (model)
Imaginary Worlds: The Art of Fantasy
Sansa Stark
X-Men: Dark Phoenix
Kyle Newman
X-Men: Apocalypse
Sophie Turner
Barely Lethal

All I Need is a supernatural, thriller, love story and the first book in a trilogy.
 A Canadian young adult urban fantasy series set in Vancouver, Canada and written by self-published author Rebecca Carrigan.
 All I Need tells the tale of young Sophie Reid and like every other mid-twenty's girl, her struggles through life and choosing the right path.
 Sophie meets a young man Nathan, who was once only a vision in her dreams, until one day he stepped into her reality.
 At the final breaking point, Sophie must decide if her guardian angel Nathan is a blessing or a tragic being left over from a life not lived.
 Together they must work to fight against Fate's path that has already been decided for them.
Sophie Turner Laing (born 7 September 1969) is a British businesswoman and media executive.
 She has been Chief Executive Officer of global content creator, producer and distributor Endemol Shine Group since December 2014.
 Prior to taking up her current role, she held a number of senior positions at Sky in the UK, including Director of Movies and Managing Director of Content.
 She had previously worked for the BBC as Acting Director of Television and, along with Peter Orton, was a founder of HiT Entertainment.
Sophie Turner (born 30 April 1984) is an Australian model, reality television personality and lawyer who first came to prominence as a contestant on the Australian television series "Search for a Supermodel".
Imaginary Worlds: the Art of Fantasy is a study of the modern literary fantasy genre written by Lin Carter.
 It was first published in paperback by Ballantine Books in June, 1973 as the fifty-eighth volume of its "Ballantine Adult Fantasy series"; it was the only nonfiction entry in the series.
 The book was among the earliest full-length critical works devoted to fantasy writers and the history of fantasy.
 It was the third of three such studies by Carter, being preceded by "" (1969) and "" (1972).
 These works, together with his editorial guidance of the "Ballantine Adult Fantasy series", established Carter as an authority on the genre.
Sansa Stark is a fictional character created by American author George R. R. Martin.
 She is a prominent character in Martin's award-winning "A Song of Ice and Fire" series.
X-Men: Dark Phoenix is an upcoming American superhero film based on Marvel Comics' X-Men characters, distributed by 20th Century Fox.
 It is intended to be the thirteenth installment in the "X-Men" film series, and the beginning of a new "X-Men" trilogy.
 The film is being written and directed by Simon Kinberg, and is set to star James McAvoy, Michael Fassbender, Jennifer Lawrence, Nicholas Hoult, Tye Sheridan, Sophie Turner, Alexandra Shipp, Kodi Smit-McPhee, Evan Peters, and Jessica Chastain.
 In "X-Men: Dark Phoenix", the X-Men must face the full power of the Dark Phoenix as well as the alien Shi'ar empire.
Kyle Newman (born March 16, 1976) is an American filmmaker whose directorial work encompasses a number of feature films including the action-comedy "Barely Lethal", starring Oscar nominees Hailee Steinfeld and Samuel L. Jackson alongside Jessica Alba and Sophie Turner, for producer Brett Ratner, released by A24 Films; Fanboys, a Star Wars-themed comedy starring Kristen Bell, produced by Kevin Spacey and distributed by The Weinstein Company; as well as The Hollow, a modern retelling of Washington Irving's The Legend of Sleepy Hollow.
X-Men: Apocalypse is a 2016 American superhero film based on the fictional X-Men characters that appear in Marvel Comics.
 It is the ninth installment in the "X-Men" film series and a sequel to "".
 Directed by Bryan Singer, with a screenplay by Simon Kinberg from a story conceived by Singer, Kinberg, Michael Dougherty and Dan Harris, the film stars James McAvoy, Michael Fassbender, Jennifer Lawrence, Oscar Isaac, Nicholas Hoult, Rose Byrne, Tye Sheridan, Sophie Turner, Olivia Munn and Lucas Till.
 The ancient mutant En Sabah Nur awakens in 1983 and plans to wipe out modern civilization and take over the world, leading the X-Men to try to stop him and defeat his team of renegade mutants.
Sophie Turner (born 21 February 1996) is an English actress.
 Turner made her professional acting debut as Sansa Stark on the HBO fantasy television series "Game of Thrones" (2011–present), which brought her international recognition.
Barely Lethal is a 2015 American teen independent action comedy film directed by Kyle Newman and written by John D'Arco, starring Hailee Steinfeld, Sophie Turner, Jessica Alba, and Samuel L. Jackson.
 The film follows a teenage special ops agent (Steinfeld) yearning for a "normal" adolescence who fakes her own death and enrolls as an "exchange" student in a suburban American high school.
 She quickly learns that surviving the treacherous waters of being a teenager can be more difficult than international espionage.