A romantic drama set in Germany just before WWI and centered on a married woman who falls in love with her husband's teacher. Separated by the war, they pledge their devotion to one another.
Unfortunately the movie A Promise is not yet available on HBO Max.
| Writing | Patrice Leconte | Screenplay |
| Writing | Stefan Zweig | Novel |
| Writing | Jérôme Tonnerre | Screenplay |
| Directing | Patrice Leconte | Director |
| Production | Olivier Delbosc | Producer |
| Production | Marc Missonnier | Producer |
| Production | Susie Figgis | Casting |
| Sound | Cecile Tournesac | Music Editor |
| Costume & Make-Up | Anne Moralis | Makeup Department Head |
| Sound | Gabriel Yared | Music |
| Production | Didier Lechien | Location Manager |
| Crew | Manuel Demoulling | Property Master |
| Editing | Paul Heymans | Dialogue Editor |
| Visual Effects | Jean Louis Dousson | Visual Effects Supervisor |
| Sound | Thomas Gauder | Sound Re-Recording Mixer |
| Visual Effects | Benjamin Ageorges | Visual Effects Supervisor |
| Art | Françoise Joset | Assistant Art Director |
| Sound | Laurence Morel | Boom Operator |
| Crew | Ludwig Töpke | Transportation Coordinator |
| Visual Effects | Stéphane Bidault | Visual Effects Supervisor |
| Directing | Élodie Van Beuren | Script Supervisor |
| Camera | Eduardo Serra | Director of Photography |
| Production | Patrick Hella | Casting |
| Editing | Joëlle Hache | Editor |
| Sound | Jean-Stephane Garbe | Sound Recordist |
| Sound | Héléna Réveillère | Sound Recordist |
