The Final Problem Official Trailer: Netflix Sets a Stylish Murder Mystery in 1959

Some mystery stories begin with a detective arriving at a crime scene. The Final Problem takes a more intriguing route: it puts a retired actor, once famous for playing Sherlock Holmes, inside a secluded hotel where a suspicious death turns every guest into a potential suspect.

Netflix’s upcoming limited series is based on the bestselling novel The Final Problem by acclaimed Spanish author Arturo Pérez-Reverte. Set in 1959, the story combines classic whodunit elements with a richly atmospheric period setting, creating the kind of slow-burning mystery designed to reward viewers who enjoy secrets, suspicion and carefully placed clues.

Netflix has confirmed that the series will premiere globally on September 25, 2026.

A Murder Mystery Trapped by the Storm

The premise immediately establishes a classic locked-room mystery.

During the spring of 1959, thirteen people become stranded on a small island near Mallorca after a violent storm cuts them off from the outside world. At the hotel where they are staying, an English tourist named Elisa Mander is found dead.

At first, her death appears to be suicide. But as questions begin to surface, the possibility of murder becomes increasingly difficult to ignore.

The isolated location is crucial. There is nowhere for the guests to escape, and no outsider can easily reach them. With communication and movement restricted, suspicion naturally turns inward.

Netflix describes the series as a mystery, crime thriller and drama with a deliberately suspenseful, slow-burn approach.

That setup gives The Final Problem a distinctly classic mystery atmosphere while allowing the series to develop its characters alongside the central investigation.

José Coronado Leads the Investigation

At the center of the story is Basil, played by José Coronado. He is a retired actor who once portrayed Sherlock Holmes on the big screen.

That detail is more than a clever character trait. Basil’s professional past gives him an unusual relationship with detective work. He has spent years performing the methods and mannerisms of a fictional investigator, but now he has to confront a real murder.

Rather than presenting Basil as a conventional professional detective, the story places him in an unfamiliar situation where observation, intuition and knowledge of human behavior become his most important tools.

He is joined by Foxá, an aspiring thriller writer played by Martiño Rivas. Together, they begin examining the hotel and the people trapped inside it.

The partnership could become one of the show’s strongest elements, particularly because both characters approach mystery from different perspectives.

A Strong Spanish Ensemble

The series features a notable Spanish and international cast.

Alongside José Coronado are María Valverde, Martiño Rivas and Maribel Verdú. Valverde plays Adela Figueroa, a mysterious young woman traveling with a friend, while Verdú portrays Mrs. Raquel Ausländer, the hotel’s manager.

The wider ensemble includes Gonzalo de Castro, Cristina Kovani, José Condessa, Pepón Nieto and Daniel Holguín. Netflix’s official materials identify the production as a period mystery built around an ensemble of characters, each potentially carrying secrets of their own.

That ensemble structure is particularly important for a whodunit. In a story with thirteen isolated people, character relationships can become just as significant as physical evidence.

Why the 1959 Setting Matters

The period setting gives The Final Problem an identity beyond its murder investigation.

The hotel, formal clothing, classic interiors and restrained social atmosphere shown in the promotional material create a world where appearances matter. The characters are not simply trying to discover who committed the crime; they are also trying to protect their own reputations and conceal whatever they would rather keep private.

The trailer’s visual presentation leans into this atmosphere. Warm interiors contrast with the threatening isolation outside, giving the hotel an almost theatrical quality.

That is fitting for Basil, a former actor accustomed to playing Sherlock Holmes. In this environment, everyone may have a role to perform and someone may be particularly good at hiding behind theirs.

Based on Arturo Pérez-Reverte’s Bestseller

One of the biggest reasons to keep an eye on the series is its literary foundation.

The Final Problem is adapted from the bestselling novel of the same name by Arturo Pérez-Reverte, one of Spain’s best-known contemporary writers. Netflix announced the adaptation as a mystery thriller set against the backdrop of 1959.

The adaptation is directed by Félix Viscarret, with the screenplay credited to Alberto Macías, Carlos Molinero and Marisol Ferré, alongside Pérez-Reverte’s source novel.

That combination suggests a series focused not only on the identity of the killer but also on atmosphere, character psychology and the mechanics of a carefully constructed mystery.

When Does The Final Problem Premiere on Netflix?

Netflix has scheduled The Final Problem for September 25, 2026. It is being presented as a limited series rather than a conventional ongoing drama. Netflix currently lists the show among its mystery, crime, thriller and drama programming.

For viewers who enjoy contained mysteries, that format could be particularly appealing. The story has a defined setting, a limited group of suspects and a central question that needs to be answered: Who killed Elisa Mander, and why?

And with everyone trapped on the island, there is no easy way to simply walk away from the mystery.

Final Thought

The Final Problem looks like a promising addition to Netflix’s international mystery lineup. Its combination of a classic isolated-murder premise, a 1959 period setting, a strong Spanish cast and the unusual concept of a retired Sherlock Holmes actor investigating a real crime gives the series a distinctive hook.

Rather than relying solely on action, the trailer points toward a slower, more atmospheric mystery where conversations, relationships and hidden motives may prove just as important as the physical clues.

For fans of locked-room mysteries, Spanish crime dramas, period thrillers and Netflix mystery series, The Final Problem deserves a place on the September watchlist.

September 25 may be the date but the real question is whether viewers can solve the final problem before Basil does.

SOURCE: Netflix, Netflix Media Center, Mod Productiones, IMDB

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