Question: Christopher Markus and Stephen McFeely are screenwriters for a series of fantasy films by C.S. Lewis, what was the film series?

Context paragraphs:
Captain America: The First Avenger: Captain America: The First Avenger is a 2011 American superhero film based on the Marvel Comics character Captain America, produced by Marvel Studios and distributed by Paramount Pictures.  It is the fifth film in the Marvel Cinematic Universe.  The film was directed by Joe Johnston, written by Christopher Markus & Stephen McFeely, and stars Chris Evans, Tommy Lee Jones, Hugo Weaving, Hayley Atwell, Sebastian Stan, Dominic Cooper, Neal McDonough, Derek Luke, and Stanley Tucci.  Set predominantly during World War II, "Captain America: The First Avenger" tells the story of Steve Rogers, a sickly man from Brooklyn who is transformed into super-soldier Captain America and must stop the Red Skull, who intends to use an artifact called the "Tesseract" as an energy-source for world domination.

List of Agent Carter characters: "Agent Carter" is an American television series created for ABC by Christopher Markus & Stephen McFeely, inspired by the 2011 film "", and the 2013 Marvel One-Shot short film of the same name.  It is set in the Marvel Cinematic Universe (MCU), sharing continuity with the films and other television series of the franchise.  The first season, consisting of eight episodes, originally aired from January 6 to February 24, 2015, while the second season, consisting of ten episodes, originally aired from January 19 to March 1, 2016.  "Agent Carter" was canceled by ABC on May 12, 2016.

Captain America: Civil War: Captain America: Civil War is a 2016 American superhero film based on the Marvel Comics character Captain America, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.  It is the sequel to 2011's "" and 2014's "", and the thirteenth film of the Marvel Cinematic Universe (MCU).  The film is directed by Anthony and Joe Russo, with a screenplay by Christopher Markus & Stephen McFeely, and features an ensemble cast, including Chris Evans, Robert Downey Jr., Scarlett Johansson, Sebastian Stan, Anthony Mackie, Don Cheadle, Jeremy Renner, Chadwick Boseman, Paul Bettany, Elizabeth Olsen, Paul Rudd, Emily VanCamp, Tom Holland, Frank Grillo, William Hurt, and Daniel Brühl.  In "Captain America: Civil War", disagreement over international oversight of the Avengers fractures them into opposing factions—one led by Steve Rogers and the other by Tony Stark.

Captain America: The Winter Soldier: Captain America: The Winter Soldier is a 2014 American superhero film based on the Marvel Comics character Captain America, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.  It is the sequel to 2011's "" and the ninth film in the Marvel Cinematic Universe (MCU).  The film was directed by Anthony and Joe Russo, with a screenplay by Christopher Markus & Stephen McFeely, who had also written "The First Avenger".  It stars Chris Evans as Captain America, leading an ensemble cast that includes Scarlett Johansson, Sebastian Stan, Anthony Mackie, Cobie Smulders, Frank Grillo, Emily VanCamp, Hayley Atwell, Robert Redford, and Samuel L. Jackson.  In "Captain America: The Winter Soldier", Captain America, Black Widow, and Falcon join forces to uncover a conspiracy within S.H.I.E.L.D. while facing a mysterious assassin known as the Winter Soldier.

Untitled Avengers film: The untitled Avengers film is an upcoming American superhero film based on the Marvel Comics superhero team the Avengers, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.  It is intended to be the direct sequel to 2018's "", as well as the sequel to 2012's "Marvel's The Avengers" and 2015's "" and the twenty-second film installment in the Marvel Cinematic Universe (MCU).  The film is directed by Anthony and Joe Russo, with a screenplay by Christopher Markus & Stephen McFeely, and features an ensemble cast that includes Robert Downey, Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Benedict Cumberbatch, Evangeline Lilly, Karen Gillan, Anthony Mackie, Tom Holland, Zoe Saldana, Dave Bautista, Paul Bettany, Scarlett Johansson, Jon Favreau, Gwyneth Paltrow, Sebastian Stan, Don Cheadle, and Pom Klementieff.

Now is Not the End: "Now is Not the End" is the first episode of the first season of the American television series "Agent Carter", inspired by the films "" and "", and the Marvel One-Shot short film also titled "Agent Carter".  It features the Marvel Comics character Peggy Carter as she goes undercover to try and clear the name of her friend Howard Stark, and is set in the Marvel Cinematic Universe (MCU), sharing continuity with the films of the franchise.  The episode was written by Christopher Markus and Stephen McFeely and directed by Louis D'Esposito.

The Chronicles of Narnia (film series): The Chronicles of Narnia is a series of fantasy films from Walden Media, based on "The Chronicles of Narnia", a series of novels by C. S. Lewis.  From the seven novels, there have been three film adaptations so far—"" (2005), "" (2008) and "" (2010)—which have grossed over $1.5 billion worldwide among them.

Agent Carter (TV series): Marvel's Agent Carter, or simply Agent Carter, is an American television series created for ABC by Christopher Markus & Stephen McFeely, inspired by the 2011 film "", and the 2013 Marvel One-Shot short film of the same name.  It is set in the Marvel Cinematic Universe (MCU), sharing continuity with the films and other television series of the franchise.  The series was produced by ABC Studios, Marvel Television, and F&B Fazekas & Butters, with Tara Butters, Michele Fazekas, and Chris Dingess serving as showrunners.

Christopher Markus and Stephen McFeely: Christopher Markus and Stephen McFeely are a duo of American screenwriters and producers.  They are known for their work in the Marvel Cinematic Universe, having written the three Captain America films ("", "", and ""), "", and will be writing "" and its untitled sequel; and having created the "Agent Carter" TV series.  They are also the screenwriters of "The Chronicles of Narnia" film franchise.

Thor: The Dark World: Thor: The Dark World is a 2013 American superhero film based on the Marvel Comics character Thor, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.  It is the sequel to 2011's "Thor" and the eighth film in the Marvel Cinematic Universe.  The film was directed by Alan Taylor, with a screenplay by Christopher Yost and Christopher Markus & Stephen McFeely.  It stars Chris Hemsworth, Natalie Portman, Tom Hiddleston, Anthony Hopkins, Stellan Skarsgård, Idris Elba, Christopher Eccleston, Adewale Akinnuoye-Agbaje, Kat Dennings, Ray Stevenson, Zachary Levi, Tadanobu Asano, Jaimie Alexander, and Rene Russo.  In "Thor: The Dark World", Thor teams up with Loki to save the Nine Realms from the Dark Elves led by the vengeful Malekith, who intends to plunge the universe into darkness.

Supporting paragraphs: Christopher Markus and Stephen McFeely The Chronicles of Narnia (film series)
Answer: The Chronicles of Narnia