The Horman case was made into the Hollywood film Missing (1982), directed by Greek filmmaker Costa-Gavras, starring Jack Lemmon and Sissy Spacek as Horman's father and wife, trying to discover his fate.
When the film was released by Universal Studios, Nathaniel Davis, United States Ambassador to Chile from 1971 to 1973, filed a USD 150 million libel suit against the director and the studio, although he was not named directly in the movie (he had been named in the book).