Were both Escape to Witch Mountain and The Muppets films adapted from science fiction novels written by Alexander H. Key?
Escape to Witch Mountain (1975 film): Escape to Witch Mountain is a 1975 American fantasy-children's film, adapted from the science fiction novel written by Alexander H. Key in 1968. The Muppets (film): The Muppets is a 2011 American musical comedy film and the seventh theatrical film featuring the Muppets. The Muppets (film):  The film is directed by James Bobin, written by Jason Segel and Nicholas Stoller, produced by David Hoberman and Todd Lieberman, and stars Segel, Amy Adams, Chris Cooper and Rashida Jones, as well as Muppet performers Steve Whitmire, Eric Jacobson, Dave Goelz, Bill Barretta, David Rudman, Matt Vogel, and Peter Linz. The Muppets (film):  Bret McKenzie served as music supervisor, writing four of the film's five original songs, and Christophe Beck composed the film's score. The Muppets (film):  In "The Muppets", devoted fan Walter, his brother Gary, and Gary's girlfriend Mary help Kermit the Frog reunite the disbanded Muppets, as they must raise $10 million to save the Muppet Theater from Tex Richman, a businessman who plans to demolish the studio to drill for oil.
no