Netflix sets September 25 premiere for limited series “The Final Problem”

Netflix has announced the premiere date for its latest limited series, “The Final Problem,” set to arrive on the platform on September 25. The streamer unveiled the release timing in a post on its newsroom, framing the show as a period mystery and thriller built around an ensemble cast.

According to Netflix, the limited series is based on Arturo Pérez-Reverte’s novel of the same name. The story begins in the spring of 1959, when 13 people become stranded by a violent storm on a small island off the coast of Mallorca, finding themselves cut off at a secluded hotel where an unexpected death sets off a cascade of suspicion.

Netflix said a character named Elisa Mander, described as a quiet English tourist, is found dead. While it initially appears to be suicide, Netflix said the circumstances reveal something darker, turning the island’s constrained setting into a closed-circle crime that drives the series.

The company also described the show’s central investigation. Basil, played by Jose Coronado, is a retired actor who previously portrayed Sherlock Holmes on the big screen, and he is pulled into the role of investigator as the mystery escalates among the guests. As suspicion spreads, Netflix said Basil joins forces with Foxá, an aspiring thriller writer played by Martiño Rivas, to search for answers throughout the hotel.

María Valverde plays Adela Figueroa, described by Netflix as a mysterious young woman traveling with a friend, while Maribel Verdú takes on the role of Mrs. Ausländer, the hotel’s manager. Netflix characterized the narrative as one where every guest and staff member becomes a suspect, and where the crime turns out to be “far more intricate and elusive” than initially imagined.

Netflix said the cast also includes additional talent beyond the four lead actors named in the announcement, but the post did not provide a full credits list. Beyond the date and the premise, the company did not disclose season length, episode count, runtime, or production details in the newsroom post.

From a programming standpoint, the announcement fits Netflix’s broader push for scripted, event-driven launches that mix known literary properties with star-heavy casting. A period setting and closed-room mystery format can be a marketing advantage for streamers because it leans on genre conventions that are familiar to viewers while still offering a distinct visual and tonal identity.

For viewers and the market, the next key development will be how Netflix rolls out marketing closer to release, and whether it provides additional details such as episode count and production credits. The company’s announcement stops short of discussing how the show will be positioned alongside the streamer’s other September releases, leaving timing and rollout strategy unclear beyond the September 25 premiere date.