Nelly leaves her lazy, unemployed husband to work for retired judge Mr Arnaud, forty years her senior, after he offers to clear her bills for her. While she types his memoirs the two develop a close friendship, but Arnaud becomes jealous when Nelly begins dating his good-looking young publisher.
Unfortunately the movie Nelly and Monsieur Arnaud is not yet available on HBO Max.
| Editing | Jacqueline Thiédot | Editor |
| Writing | Jacques Fieschi | Screenplay |
| Directing | Claude Sautet | Director |
| Production | Antoine Gannagé | Executive Producer |
| Camera | Jean-François Robin | Director of Photography |
| Writing | Yves Ulmann | Screenplay |
| Sound | Philippe Sarde | Original Music Composer |
| Production | Alain Sarde | Producer |
| Writing | Claude Sautet | Screenplay |
| Art | Carlos Conti | Production Design |
| Art | Alain Pitrel | Art Direction |
| Art | Maya Wendling | Art Direction |
| Costume & Make-Up | Catherine Bouchard | Costume Design |
| Costume & Make-Up | Marie Lastennet | Makeup Artist |
| Costume & Make-Up | Daniel Mourgues | Hairstylist |
