In the twentieth film in the series, in 1950's Wyoming, middle-aged Indiana Jones and his friend Grey Cloud have obtained a sacred ceremonial pipe and end up in a snow-logged cabin. When Jones uncovers a soprano sax, he is reminded of his college days in 1920's Chicago, waiting tables at Colosimo's restaurant and becoming obsessed with Jazz music. When Colosimo was murdered, young Indy got caught up in the investigation together with his roommate Eliot Ness and young reporter Ernest Hemingway.
| Writing | Jule Selbo | Screenplay |
| Directing | Carl Schultz | Director |
| Production | George Lucas | Executive Producer |
| Writing | George Lucas | Story |
| Production | Rick McCallum | Producer |
| Costume & Make-Up | Peggy Farrell | Costume Design |
| Art | Frank Richwood | Art Direction |
| Editing | Edgar Burcksen | Editor |
| Art | Barbara Kretschmer | Production Design |
| Crew | David Beavis | Special Effects |
| Art | James Edward Ferrell Jr. | Set Decoration |
| Costume & Make-Up | Eva Ungrová-Malíková | Makeup Artist |
| Production | Jane Jenkins | Casting |
| Costume & Make-Up | Rudolph Eavy III | Makeup Artist |
| Directing | Vic Armstrong | Second Unit Director |
| Production | Roger Mussenden | Casting |
| Costume & Make-Up | Pat Hay | Makeup Artist |
| Directing | Ben Burtt | Second Unit Director |
| Production | Janet Hirshenson | Casting |
| Production | Rick McCallum | Production Manager |
| Art | Jeff Ginn | Production Design |
| Camera | David Tattersall | Director of Photography |
| Sound | Joel McNeely | Original Music Composer |
