Prime Video Drops Trailer for The Summer I Turned Pretty Finale

Prime Video has unveiled the Paris trailer and new cast joining the final three episodes of The Summer I Turned Pretty ahead of its September 17 finale.

Prime Video is preparing fans for one last summer with Belly Conklin. On Friday, the streamer released a brand-new trailer set in Paris for the closing chapter of The Summer I Turned Pretty, giving viewers a glimpse of what’s ahead as the hit series nears its end.

The final three episodes of season 3 will begin rolling out on Wednesdays at 12 a.m. PT/3 a.m. ET, leading up to the series finale on September 17, 2025. As Isabel “Belly” Conklin (Lola Tung) heads to Paris, the show welcomes a new group of characters who will play an important role in her story.

Joining the cast in recurring roles are:

Corinna Brown

The London-based actress is best known for playing Tara Jones in Netflix’s adaptation of Alice Oseman’s graphic novels Hearstopper. Brown also appears in the new British series In Flight and made her debut in the BBC Three TV-movie My Murder. A graduate of East 15 Acting School, her stage credits include Noughts & Crosses, Coppelia, Sleeping Beauty, and Macbeth.

Fernando Cattori

Cattori recently starred in the Prime Video feature Contigo en el Futuro (With You in the Future) and now makes his debut in The Summer I Turned Pretty. His acting credits include Netflix’s Príncipes Salvajes (Untamed Royals), Ceremonia, and La Liberación (The Liberation) for Prime Video. Behind the camera, he earned a Latin Grammy nomination in 2024 for the musical short film Nacimos Llorando (We Were Born Crying) and created Recuérdame Viviendo (Remember Me Alive), one of Mexico’s most-viewed ad campaigns. Trained at NYFA, Yale Drama School, and CasaAzul, Cattori is also developing his first feature film.

Isaline Prévost Radeff

The French-Swiss actress trained at La Manufacture in Lausanne and has already earned recognition with the Migros Cultural Percentage Dramatic Arts Study Award in both 2019 and 2020. On screen, she appeared in Ceux Qui Travaillent and Des Araignées dans le Coeur before taking on a breakout role in the television series Haute Mer, which won her the 2025 Swissperform Award for Best Rising Star. Fluent in French, English, and sign language, she continues to work across film, theater, and television.

Jahz Armando

Armando joins the Paris-set episodes after previously appearing in the action-packed series Gangs of London.

With Belly’s Parisian journey set against new faces and fresh backdrops, fans can expect the series to build toward an emotional farewell as it closes out its run.