Title: Serenity (2005 film)
Content:  Serenity is a 2005 American space Western film written and directed by Joss Whedon in his feature directorial debut. The film is a continuation of Whedon's short-lived 2002 Fox television series Firefly and stars the same cast, taking place after the events of the final episode. Set in 2517, Serenity is the story of the crew of Serenity, a "Firefly-class" spaceship. The captain and first mate are veterans of the Unification War, having fought on the losing Independent side against the Alliance. Their lives of smuggling and cargo-running are interrupted by a psychic passenger who harbors a dangerous secret. The film stars Nathan Fillion, Alan Tudyk, Adam Baldwin, Summer Glau and Chiwetel Ejiofor. Serenity was released in North America on September 30, 2005, by Universal Pictures to generally positive reviews and several accolades, including the Hugo Award for Best Dramatic Presentation, the Prometheus Special Award and the Nebula Award for Best Script, but underperformed at the box office.
Title: Joss Whedon
Content:  After Universal Pictures acquired the film and distribution rights from Fox, Whedon began writing the screenplay for Serenity. Transforming the series into a film, he says, "... was the hardest piece of writing I've ever done ... It had to be self-contained and work as a movie, which meant I had to cope with problems like introducing nine main characters who'd already met!" The script was based on unused story ideas for Fireflys unfilmed second season. On writing the dialogue, Whedon felt that part of it came from "getting to invent the language", which "once I had... reads like a kind of poetry". The narrative centered on Captain Malcolm Reynolds as the hero accompanied by River Tam acting as the catalyst 
Title: Serenity (2005 film)
Content:  After Universal acquired the film rights from Fox, Whedon began writing the screenplay. His task was to explain the premise of a television series that few had seen without boring new viewers or longtime fans. He based his story on original story ideas for Fireflys un-filmed second season. Whedon's original script was 190 pages, and attempted to address all major plot points introduced in the series. After presenting the script to Barry Mendel under the title "The Kitchen Sink", Whedon and Mendel collaborated on cutting down the script to a size film-able under his budget constraints. All nine principal cast members from the television series were scheduled to return for the movie, but Glass and Tudyk could not commit to sequels, leading to the death of their characters in the second draft of the script. The tightened script and a budget Mendel and Whedon prepared were submitted to Universal on a Friday and on the following Monday morning, Stacey Snider, then head of Universal, called Mendel to officially greenlight the movie. Universal planned to begin shooting in October 2003, but delays in finishing the script postponed the start of shooting to June 2004.
Title: Serenity (2019 film)
Content:  Serenity is a 2019 American fantasy mystery thriller film written, produced and directed by Steven Knight. The film stars Matthew McConaughey, Anne Hathaway, Diane Lane, Jason Clarke, Djimon Hounsou, and Jeremy Strong, and follows a fishing boat captain who is approached by his ex-wife to murder her abusive new husband. First announced in January 2017, principal photography on the film began on Mauritius that July. Serenity was released in the United States on January 25, 2019, by Aviron Pictures to mostly negative reviews from critics. It bombed at the box office after its distributor controversially dropped its marketing efforts.
Title: Serenity (comics)
Content:  Initially, Joss Whedon invited Brett Matthews to co-write a story to bridge the series and the film. Matthews had previously worked as Whedon's assistant on several Buffy, Angel, and Firefly episodes, and had written the script for Firefly episode "Heart of Gold". According to Matthews, Those Left Behind was originally an anime project, which fell through, leading to the story being released in comicbook form.
Title: Serenity (2019 film)
Content:  On January 28, 2017, it was announced that Matthew McConaughey and Anne Hathaway would star in a "sexy noir" film, Serenity, which would be directed by Steven Knight from his own script. Greg Shapiro and Guy Heeley would produce the film through IM Global, which also financed. The production received a local government rebate of 30 percent. McConaughey and Hathaway hadn't acted together since Interstellar. On April 18, Jason Clarke joined the film to play Hathaway's character's wealthy, abusive husband. On May 10, 2017, more cast were announced, including Uma Thurman to play McConaughey's character's love interest (although Thurman soon removed herself from the production due to scheduling conflicts), and Djimon Hounsou for an unspecified role. By July 2017, confirmed cast included McConaughey, Hathaway, Clarke, Hounsou, Diane Lane (replacing Thurman), and Jeremy Strong. Principal photography on the film began late-July 2017 in Mauritius. The film's production caused a scandal in the country, as Prime Minister Pravind Jugnauth was accused of having misappropriate funds in excess of 200 million Mauritian rupees (~$6 million USD) to support the film.
Title: Serenity (comics)
Content:  Serenity: Those Left Behind is a three-issue miniseries, created in 2005 as a tie-in to the film Serenity. The series was written by Joss Whedon and Brett Matthews, illustrated by Will Conrad, lettered by Michael Heisler, and colored by Laura Martin. Those Left Behind is set after the events of the Firefly television series, to function as a bridge leading into the Serenity film. It shows Inara's departure from the Serenity’s crew, establishes Shepherd Book's intention to leave the ship, introduces several characters important to the film's storyline, including the Operative and Mingo and Fanty, and resolves the Hands of Blue plotline from the television series. Those Left Behind also reintroduces Lawrence Dobson, an Alliance agent who was (apparently) killed by Mal in the Firefly pilot episode. Whedon had always planned to bring back Dobson, but did not have the opportunity before the series was cancelled.
Title: Serenity (2005 film)
Content:  quite frankly, I'm not sure anybody else would've, with absolute faith and has maintained it. It's been the easiest process in terms of dealing with a studio that I've ever had. And they turned it into—not a blockbuster, which is not what I was trying to make, but not a low-budget movie either. They wanted to make a real movie out of it. They wanted to give us the scope that the show could never have had. So all I had to do was come up with a story that was worth that." In July 2003, Whedon said that though there was interest in the project, "I won't know really until I finish a draft whether or not it's genuine." He felt that any film deal was contingent on keeping the show's 
Title: Serenity (2019 film)
Content:  Hathaway stated she was attracted to playing Karen because the character puts up a "mask" defined by the "male gaze", and also that she was not usually asked to play these kinds of characters.
Title: Serenity (2005 film)
Content:  whom Whedon was a huge fan. However, Whedon later felt that Burwell was not the right choice because as the film changed, the needs of the score changed as well. Burwell found working on the project difficult as it required he work "opposite" to his usual approach. The production would have continued with Burwell, but his other obligations left him little time to compose an entirely new score for Serenity. Burwell was dropped from the project a few weeks before the scheduled February 2005 recording. David Newman was recommended by Universal's music executives when Whedon requested a composer capable of "everything" and "quickly". 

Question: Who was the screenwriter for Serenity?
Answer: Joss Whedon.
Joseph Hill Whedon.