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 |
| Production | Rick McCallum | Producer |
| Writing | George Lucas | Story |
| Costume & Make-Up | Peggy Farrell | Costume Design |
| Art | Frank Richwood | Art Direction |
| Directing | Ben Burtt | Second Unit Director |
| Production | Roger Mussenden | Casting |
| Production | Janet Hirshenson | Casting |
| Directing | Vic Armstrong | Second Unit Director |
| Art | James Edward Ferrell Jr. | Set Decoration |
| Art | Barbara Kretschmer | Production Design |
| Costume & Make-Up | Pat Hay | Makeup Artist |
| Production | Rick McCallum | Production Manager |
| Production | Jane Jenkins | Casting |
| Crew | David Beavis | Special Effects |
| Costume & Make-Up | Rudolph Eavy III | Makeup Artist |
| Editing | Edgar Burcksen | Editor |
| Art | Jeff Ginn | Production Design |
| Costume & Make-Up | Eva Ungrová-Malíková | Makeup Artist |
| Camera | David Tattersall | Director of Photography |
| Sound | Joel McNeely | Original Music Composer |
