This is, of course, the 4th in the world-famous Indiana Jones series. The third film was 1989's Indiana Jones and the Last Crusade. Indiana Jones, is of course, an archaelogist who has amazing, roller-coaster-ride adventures, usually in the 1930's, but this 4th film, released over 12 years after the last, may be set as far in the future as the 1950's or 1960's when Indy is about the age that Harrison Ford is now. (6/3/02). The specific "source" for Darabont's script is a story idea by George Lucas, which has been approved by both Harrison Ford and Steven Spielberg.