De film gaat over verschillende flashbacks die getoond worden aan de hand van de brief van Lisa, die Stefan leest vlak voordat hij eigenlijk zou vertrekken richting een duel (in Wenen anno 1900).
Nee, helaas is Letter from an Unknown Woman nog niet beschikbaar op Netflix in Nederland.
| Camera | Franz Planer | Director of Photography |
| Production | John Houseman | Producer |
| Sound | Daniele Amfitheatrof | Original Music Composer |
| Writing | Howard Koch | Screenplay |
| Writing | Stefan Zweig | Author |
| Directing | Max Ophüls | Director |
| Production | William Dozier | Executive Producer |
| Costume & Make-Up | Travis Banton | Costume Design |
| Art | Russell A. Gausman | Set Decoration |
| Sound | Glenn E. Anderson | Sound Designer |
| Art | Ruby R. Levitt | Set Decoration |
| Sound | Leslie I. Carey | Sound Designer |
| Art | Alexander Golitzen | Art Direction |
| Editing | Ted J. Kent | Editor |
| Writing | Stefan Zweig | Novel |
| Costume & Make-Up | Virginia Tutwiler | Wardrobe Designer |
| Lighting | Tex Bellah | Best Boy Electrician |
| Art | Wally Kirkpatrick | Props |
| Camera | Roland Smith | Grip |
