Adam Paul Scott (born April 3, 1973) is an American actor, comedian, director, screenwriter, producer, and podcaster.
 He is best known for his role as Ben Wyatt in the NBC sitcom "Parks and Recreation".
 He has also appeared as Derek in the film "Step Brothers", Henry Pollard in the Starz sitcom "Party Down", and Ed Mackenzie in the HBO series "Big Little Lies".
Alexander Johan Hjalmar Skarsgård (] ; born August 25, 1976) is a Swedish actor.
 He is best known for his roles as vampire Eric Northman on the HBO series "True Blood", Meekus in "Zoolander", the title character in "The Legend of Tarzan", Brad Colbert in the HBO miniseries "Generation Kill" and as Perry Wright in the HBO miniseries "Big Little Lies", for which he won an Emmy.
Liane Moriarty (born 15 November 1966) is an Australian author.
 She is the older sister of author Jaclyn Moriarty.
Big Little Lies is an American drama HBO miniseries created and written by David E. Kelley, based on the novel by Liane Moriarty.
 The series began filming in January 2016.
 The miniseries comprises seven episodes, all directed by Jean-Marc Vallée.
 It premiered on February 19, 2017, and concluded on April 2, 2017.
The Husband's Secret is a novel by Liane Moriarty that was first published on 30 July 2013.
 The novel tells the story of three women, whose lives unexpectedly interconnect after one of them discovers a devastating secret.
Big Little Lies is a 2014 novel written by Liane Moriarty.
 It was published in July 2014 by Penguin Publishing.
 The novel made the "New York Times" Best Seller list.
Truly Madly Guilty is a novel by Australian author Liane Moriarty.
 It tells the story of Sam and Clementine, an ordinary yet busy married couple trying to balance work and family life.
 After the couple is invited by Clementine's old friend Erika to a neighbor's barbecue party, a spiral of intrigue, lust, and betrayal is unleashed.
 The book was published in July 2016 by Flatiron Books.
Iain Armitage (born July 15, 2008) is an American child actor and web-based theater critic.
 He is the son of actor Euan Morton and theater producer Lee Armitage.
 He is the grandson of government official Richard Lee Armitage.
 He played Ziggy Chapman in the HBO miniseries "Big Little Lies".
 In January 2017, Armitage starred in an episode of "", playing a young child, Theo Lachere, who has been kidnapped.
Shailene Diann Woodley (born November 15, 1991) is an American actress and activist.
 Born in San Bernardino County, California and raised in the Simi Valley, she took acting classes with Anthony Meindl and made her screen debut in the television film "Replacing Dad" (1999), followed by numerous guest roles on television, including as Kaitlin Cooper on "The O.C." (2003–04), and several television films.
 Her leading roles as California Ford in "A Place Called Home" (2004) and Felicity Merriman in "" (2005) both earned her Young Artist Award nominations and she gained recognition for her leading role as Amy Juergens on the ABC Family television series "The Secret Life of the American Teenager" (2008–13).
 She also played Jane Chapman in the HBO limited series "Big Little Lies" for which she was nominated for a Primetime Emmy Award for Outstanding Supporting Actress in a Limited Series.
Ivy George (born May 16, 2007) is an American child actress known for playing the role of Leila in the 2015 film "".
 Ivy also appeared in the 2017 TV series "Big Little Lies" as Amabella Klein, and played Young Maya in the 2014 series "Girl Meets World".

Question: Who directed the miniseries adaptation of Liane Moriarty's Big Little Lies?
Answer: Jean-Marc Vallée