The wait is almost over: The Summer I Turned Pretty Season 3 concludes on September 17, 2025, bringing Jenny Han’s coming-of-age story to a decisive close on Prime Video. One more week, one last episode, and a lot of lingering questions about Belly, Conrad, and Jeremiah will finally meet their answers.
When and where to watch the finale
The Season 3 finale lands on Wednesday, September 17, exclusively on Prime Video. Season 3 runs 11 episodes in total, and the finale follows the streamer’s usual overnight drop, which typically means an early-morning release in the U.S. (around 3 a.m. ET / 12 a.m. PT).
How the show may diverge from the books
Fans of the novels are especially curious about whether the series will mirror the book epilogue of We’ll Always Have Summer. In the books, Belly studies abroad in Spain, graduates, and reconnects with Conrad in a finale-time jump. The series could chart a different emotional course, even while nodding to the novels’ endgame.
Fan theories: The Sabrina effect and the endgame question
Speculation has intensified around the show’s classic-film references, with Season 3’s visual and thematic winks to Billy Wilder’s Sabrina fueling predictions about Belly’s ultimate choice. Some viewers see those signposts steering toward a romantic reunion; others read them as a metaphor for growth and independence.
What Episode 10 set up
Heading into the finale, Episode 10 framed the emotional stakes and reset key relationships that have defined the series since Cousins Beach. The recap highlights how the penultimate hour positions Belly and Conrad for a make-or-break decision, while acknowledging the ways the season has broadened the characters’ lives beyond the love triangle. That context matters for an ending that aims to feel earned rather than inevitable.
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Is this really the end of the show?
Yes—Season 3 is the show’s final chapter, and the last episode on September 17 serves as the series finale. Decider’s coverage makes that point explicit while running down the season’s episode count and schedule. That clarity should help manage expectations: this is goodbye, not a baton pass to Season 4.
Big questions for the last hour
- Will the ending match the books? The core beats could rhyme with the novels, but the on-screen path—and timing—may differ, especially around the epilogue.
- Is the love triangle the true finale? The Sabrina-inspired reads suggest the finale might prioritize Belly’s growth as much as her choice.
- How early should you hit play? Prime Video’s overnight releases can arrive before your morning coffee; plan for a pre-dawn drop in the U.S.
One last check: Is Season 3 already “over”?
If you saw chatter about Episode 10 being the end, that was just the setup. There’s still one episode to go, and it premieres on September 17.
Why TSITP finale matters
The Summer I Turned Pretty has always been about more than a triangle. It’s about family, grief, and the awkward, luminous choices that turn a summer crush into a lifelong compass—or a necessary goodbye. With the series ending and the finale locked for September 17, the last hour has the chance to honor the books, surprise longtime viewers, and send Belly off with the clarity she’s earned.
Further reading and context
For readers weighing how closely the TV finale may track the novel’s epilogue, this breakdown is a quick primer on the book’s last beats. And if you’re looking for a second opinion on whether the season has been telegraphing its destination through classic-film DNA, their “Sabrina” theory dive is a useful lens before you press play next week. Finally, the recap is a spoiler-light way to remember what Episode 10 teed up before the credits roll for good.
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