A mystery writer is intrigued by the tale of notorious criminal Dimitrios Makropolous, whose dead body was found washed up on the shore in Istanbul. He decides to follow the career of Dimitrios around Europe, in order to learn more about the man. Along the way he is joined by the mysterious Mr. Peters, who has his own motivation.
| Sound | Adolph Deutsch | Original Music Composer |
| Camera | Arthur Edeson | Director of Photography |
| Writing | Frank Gruber | Screenplay |
| Writing | Eric Ambler | Novel |
| Directing | Jean Negulesco | Director |
| Editing | Frederick Richards | Editor |
| Production | Jack L. Warner | Executive Producer |
| Production | Henry Blanke | Producer |
| Sound | Oliver S. Garretson | Sound |
| Art | Ted Smith | Art Direction |
| Art | Walter F. Tilford | Set Decoration |
| Costume & Make-Up | Perc Westmore | Makeup Artist |
| Directing | Jack Sullivan | Assistant Director |
| Sound | Leo F. Forbstein | Music Director |
| Sound | Jerome Moross | Orchestrator |
| Sound | Julius Klein | Musician |
| Crew | Herschel Daugherty | Dialogue Coach |
| Crew | Michael D. Kadri | Technical Advisor |
| Crew | Jack L. Warner | Presenter |
| Sound | Louanne Hogan | Musician |
