Succesvol advocaat Anne leidt een gelukkig leven met haar man Pierre en hun twee jonge dochters. Op een dag trekt de 17-jarige Theo, Pierres zoon uit een eerder huwelijk, bij hen in. Het duurt niet lang voordat hij zijn vader vertelt dat hij een affaire heeft met zijn stiefmoeder. Pierre is geschokt, Anne ontkent. De harmonie binnen het eens zo gelukkige gezin is in een keer verdwenen.
Nee, helaas is L'été dernier nog niet beschikbaar op Netflix in Nederland.
| Directing | Catherine Breillat | Director |
| Writing | Catherine Breillat | Writer |
| Production | Saïd Ben Saïd | Producer |
| Sound | Séverin Engler | Boom Operator |
| Sound | Jonathan Martins | ADR Mixer |
| Sound | Loïc Prian | Sound Editor |
| Sound | Katia Boutin | Dialogue Editor |
| Camera | Romain Baudéan | First Assistant Camera |
| Camera | Lucie Colombié | "B" Camera Operator |
| Sound | Lucas Le Néouanic | Sound Engineer |
| Editing | Milan Evrard | Dailies Manager |
| Sound | Gildas Mercier | Foley Mixer |
| Sound | Cyril Holtz | Sound Re-Recording Mixer |
| Camera | Ugo Villion | Second Assistant Camera |
| Camera | Lucie Colombié | First Assistant Camera |
| Sound | Yannis do Couto | Sound Assistant |
| Camera | Ugo Villion | First Assistant "B" Camera |
| Camera | Louise Hartvick | Additional Second Assistant Camera |
| Production | Paola Raiman | Casting Assistant |
| Lighting | Adrien Grasswill | Electrician |
| Sound | Romain Anklewicz | Foley Artist |
| Sound | Romain Arnaud | Sound Re-Recording Mixer |
| Sound | Thomas Pichon | ADR Editor |
| Editing | Christophe Bousquet | Colorist |
| Camera | Léonore Dumas | Camera Trainee |
| Sound | Damien Luquet | Sound Mixer |
| Visual Effects | My Lan Nguyen Quang | Visual Effects |
| Camera | Jeanne Lapoirie | Director of Photography |
| Costume & Make-Up | Constance Allain | Assistant Costume Designer |
| Crew | Emilien Bergeret | Stunts |
| Editing | François Quiqueré | Editor |
| Art | Nathalie Depose | Location Scout |
| Writing | Maren Louise Käehne | Original Film Writer |
| Writing | May el-Toukhy | Original Film Writer |
| Art | Sébastien Danos | Production Design |
| Art | Lena Desvigne | Assistant Decorator |
| Art | Sandy Tozello | Graphic Designer |
| Costume & Make-Up | Antonia Siliberti | Key Hair Stylist |
| Art | Johan Llorca | Property Master |
| Art | Isabelle Melica | Painter |
| Production | Clifford Werber | Executive Producer |
| Production | Rene Ezra | Executive Producer |
| Production | Kevin Chneiweiss | Associate Producer |
| Production | Caroline Blanco | Executive Producer |
| Writing | Pascal Bonitzer | Co-Writer |
| Production | Laziz Belkaï | Unit Production Manager |
| Costume & Make-Up | Khadija Zeggaï | Costume Design |
