Missing (1982)

Missing
Drama, Mystery, Thriller
Based on the real-life experiences of Ed Horman. A conservative American businessman travels to Chile to investigate the sudden disappearance of his son after a military takeover. Accompanied by his son's wife he uncovers a trail of cover-ups that implicate the US State department which supports the dictatorship.
Starring
Jack Lemmon, Sissy Spacek, Melanie Mayron, John Shea, Charles Cioffi, David Clennon, Richard Venture, Jerry Hardin, Richard Bradford, Joe Regalbuto
Directed By
Costa-Gavras