Question:  Lauren McCrostie is best known for her role in a 2014 British mystery drama film written and directed by who?

Context paragraphs:
Amy Myers: Amy Myers (born 3 August 1938) is a British mystery writer.  She is best known for her Marsh and Daughter mystery series, featuring a writing team consisting of a wheel-chair bound ex-policeman and his daughter, and for another series featuring a Victorian era chef, Auguste Didier.  Myers' books have been favourably reviewed in "Library Journal", "Publishers Weekly", "Booklist", and "Kirkus Reviews".  Myers has also been published several times in "Ellery Queen's Mystery Magazine".  Janet Hutchings, the magazine's longtime editor, called Myers "one of our best and most frequent contributors of historicals" (i.e., historical mysteries).

The Falling (2014 film): The Falling is a 2014 British mystery drama film written and directed by Carol Morley.  It stars Maisie Williams and Florence Pugh as best friends at an all-girls school.  The film also stars Greta Scacchi, Monica Dolan, Maxine Peake, and Mathew Baynton.  Production began in October 2013.  The film premiered at the BFI London Film Festival on 11 October 2014 and was released theatrically on 24 April 2015 in the UK.  "The Falling" earned £468,762 on a £750,000 budget.

Lauren McCrostie: Lauren McCrostie (born 10 January 1996) is a British actress from London, England, who is best known for her roles in the films "Miss Peregrine's Home for Peculiar Children", "The Falling" and short films "Second Skin" and "Brothers".

Possession (2002 film): Possession is a 2002 British-American romantic mystery drama film written and directed by Neil LaBute and starring Gwyneth Paltrow and Aaron Eckhart.  It is based on the 1990 by British author A. S. Byatt, who won the Booker Prize for it the year it was published.

Waiting for You (film): Waiting for You is a British mystery drama film written by Hugh Stoddart and Charles Garrad and directed by Charles Garrad.  It stars Colin Morgan and Fanny Ardant with Audrey Bastien and Abdelkrim Bahloul featured in supporting roles.

Home at Seven (film): Home at Seven is a 1952 British mystery drama film directed by and starring Ralph Richardson.  It also featured Margaret Leighton, Jack Hawkins, Campbell Singer and Michael Shepley.  It was based on the play "Home at Seven" by R. C. Sherriff.  The film remains Richardson's only work as a film director.  It follows a man who returns to his suburban home one evening to discover that he has been missing for 24 hours, despite not remembering the 'lost' day.

Thagaraaru: Thagaraaru (English: "Fight" ) is a 2013 Indian Tamil action mystery drama film written and directed by newcomer Ganesh Vinaayac and produced by Cloud Nine Movies.  The film stars Arulnithi and Poorna in the lead roles.  The soundtrack was composed by Dharan, while Praveen Sathya composed the score.  Dillraj was the cinematographer, and T. S. Suresh edited the film.  The film released on 6 December 2013 and received positive reviews from critics.The film did average business at the box office.

Waterland (film): Waterland is a 1992 British mystery drama film based on Graham Swift's 1983 novel of the same name, directed by Stephen Gyllenhaal, and stars Jeremy Irons, Sinéad Cusack, Ethan Hawke and John Heard.

Wetherby (film): Wetherby is a 1985 British mystery drama film written and directed by playwright David Hare.

The Witness for the Prosecution (miniseries): The Witness for the Prosecution is a 2016 British mystery drama thriller television serial broadcast on BBC One over Christmas 2016.  The two-part programme was adapted by Sarah Phelps and directed by Julian Jarrold and is based on Agatha Christie's short story of the same name.  The plot is based on Agatha Christie's original short story rather than the play, unlike Billy Wilder's 1957 film version.

Supporting paragraphs: Lauren McCrostie The Falling (2014 film)
Answer: Carol Morley