Paola, wife of a wealthy Turinese industrialist, meets Alberto, a friend of her husband, who emigrated to Argentina and has returned for business reasons. After a few days, Alberto confesses his love to Paola, but she resists. However, during a vacation in Sardinia, having waited in vain for the arrival of her husband, she gives in to Alberto's wishes.
Unfortunately the movie How, When, and with Whom is not yet available on Disney Plus.
| Directing | Antonio Pietrangeli | Director |
| Writing | Martin Maurice | Novel |
| Production | Gianni Hecht Lucari | Producer |
| Directing | Valerio Zurlini | Co-Director |
| Art | Maurizio Chiari | Production Design |
| Editing | Franco Fraticelli | Editor |
| Camera | Mario Montuori | Director of Photography |
| Writing | Tullio Pinelli | Screenplay |
| Writing | Antonio Pietrangeli | Screenplay |
| Production | Renato Jaboni | Production Manager |
| Costume & Make-Up | Maurizio Chiari | Costume Design |
| Costume & Make-Up | Margherita Ferroni | Assistant Costume Designer |
| Sound | Armando Trovajoli | Original Music Composer |
| Production | Fausto Saraceni | Executive Producer |
