Missing is a 1982 American biographical thriller drama film directed by Costa-Gavras from a screenplay written by Gavras and Donald E. Stewart, adapted from the book The Execution of Charles Horman: An American Sacrifice (1978) by Thomas Hauser, based on the disappearance of American journalist Charles Horman, in the aftermath of the United States-backed Chilean coup of 1973, which deposed the democratically elected socialist President Salvador Allende.