Question: Liam Aiken played Klaus Baudelaire in the movie that was an adaptation of which three novels?

Context articles: A Series of Unfortunate Events
The Frontier (2015 film)
Electrick Children
I Dreamed of Africa
Ned Rifle
The Slippery Slope
Liam Aiken
Good Boy!
Louis Hynes
Lemony Snicket's A Series of Unfortunate Events

A Series of Unfortunate Events is a series of thirteen children's novels by Lemony Snicket, the pen name of American author Daniel Handler.
 The books follow the turbulent lives of Violet, Klaus, and Sunny Baudelaire.
 After their parents' death in a fire, the children are placed in the custody of a murderous relative, Count Olaf, who attempts to steal their inheritance and, later, orchestrates numerous disasters with the help of his accomplices as the children attempt to flee.
 As the plot progresses, the Baudelaires gradually confront further mysteries surrounding their family and deep conspiracies involving a secret society known as V.F.D., with connections to both Olaf and their parents.
 The series is narrated by Snicket, who dedicates each of his works to his deceased love interest, Beatrice, and often attempts to dissuade the reader from continuing to read the Baudelaires' story.
The Frontier is a 2015 American crime film directed by Oren Shai and written by Oren Shai and Webb Wilcoxen.
 The film stars Jocelin Donahue, Kelly Lynch, Jim Beaver, Izabella Miko, Jamie Harris, Liam Aiken, and A. J. Bowen.
 Donahue plays a drifter on the run who stops at a motel, only to find that several people there may be involved in a local heist.
Electrick Children is a 2012 American independent film written and directed by Rebecca Thomas and starring Julia Garner, Rory Culkin, and Liam Aiken.
 Garner plays Rachel, a 15-year-old girl from a fundamentalist Mormon community in Utah.
 After learning that she is pregnant, she believes she has conceived miraculously through listening to a song on a cassette tape.
I Dreamed of Africa is a 2000 American biographical drama film directed by Hugh Hudson, starring Kim Basinger in her first picture since she co-starred in "L.A. Confidential" in 1997.
 It also stars Vincent Perez, Eva Marie Saint, Garrett Strommen, Liam Aiken and Daniel Craig.
 It is based on the autobiographical novel "I Dreamed of Africa" by Kuki Gallmann, an Italian writer who moved to Kenya and became involved in conservation work.
 It was screened in the "Un Certain Regard" section at the 2000 Cannes Film Festival.
Ned Rifle is a 2014 American drama film written and directed by Hal Hartley.
 It is the third and final film in a trilogy following characters introduced in Hartley's 1997 film "Henry Fool" and 2006 sequel "Fay Grim".
 "Ned Rifle" stars Liam Aiken as the title character, reprising his role from the other two films, as well as Aubrey Plaza, Parker Posey, James Urbaniak, and Thomas Jay Ryan.
The Slippery Slope is the tenth novel in the children's novel series "A Series of Unfortunate Events" by Lemony Snicket.
 It was illustrated by Brett Helquist and released on September 23, 2003.
 In the novel, Violet and Klaus Baudelaire make their way up the Mortmain Mountain to rescue their sister Sunny from Count Olaf and his troupe.
 They meet Quigley Quagmire, a character who they thought to be dead, and visit the headquarters of a mysterious organization called "V.F.D." They are reunited with Sunny and manage to escape from Olaf.
 The book has received positive reviews and been translated into several different languages.
Liam Pádraic Aiken (born January 7, 1990) is an American actor.
 He has starred in films such as "Stepmom" (1998), "Road to Perdition" (2002), and "Good Boy!
" (2003), and played Klaus Baudelaire in "Lemony Snicket's A Series of Unfortunate Events" (2004), based on the series of books.
Good Boy!
 is a 2003 comedy film directed by John Robert Hoffman.
 The film stars Liam Aiken as Owen Baker, as well as the voices of Matthew Broderick, Delta Burke, Donald Faison, Brittany Murphy, Carl Reiner, Vanessa Redgrave, and Cheech Marin as the abundant dog characters in the movie.
 The film was based on the book "Dogs from Outer Space" by Zeke Richardson.
 John Hoffman and Richardson collaborated on the screen story, while Hoffman wrote the screenplay.
Louis Oliver Hynes (born 9 October 2001) is a British teenage actor.
 He rose to prominence for his leading role as Klaus Baudelaire in the Netflix series "A Series of Unfortunate Events" series in 2017.
Lemony Snicket's A Series of Unfortunate Events is a 2004 American dark comedy film directed by Brad Silberling.
 It is a film adaptation of "A Series of Unfortunate Events" by Lemony Snicket, covering the first three novels "The Bad Beginning", "The Reptile Room", and "The Wide Window".
 The film stars Jim Carrey, Liam Aiken, Emily Browning, Timothy Spall, Catherine O'Hara, Billy Connolly, Cedric the Entertainer, Luis Guzmán, Jennifer Coolidge and Meryl Streep, as well as Jude Law as the voice of Lemony Snicket.