The Final Problem Recap: What Happens in Episodes 1-4?

The Final Problem gives Benjamin Basil the sort of career comeback he never expected. Jose Coronado’s aging Spanish actor is best remembered for playing Sherlock Holmes, but a chance trip to Mallorca places him inside a real mystery when a storm strands thirteen people at the isolated Hotel Auslander on Santa Agueda. What begins with one suspicious death gradually becomes a contest between Basil and someone who seems unusually familiar with detective fiction, leaving clues that increasingly feel designed specifically for him. Netflix’s four-part limited series adapts Arturo Perez-Reverte’s novel and uses each episode to move Basil from reluctant observer to a man unable to walk away until he understands what really happened.

Related: Will There Be The Final Problem Season 2? What We Know

The Final Problem Episode 1

Benjamin Basil’s journey begins when he runs into producer Fonseca and aspiring actress Vicky Montes. Fonseca is planning a new production and tempts Basil with the possibility of returning to the screen, but bad weather disrupts their trip to Mallorca. They instead stop at Santa Agueda, where the remote Hotel Auslander is effectively the only inhabited place on the island. Basil soon meets detective novelist Francisco Foxa, who immediately recognizes him as the celebrated actor who once played Sherlock Holmes. Netflix’s official episode description similarly frames the premiere around Basil arriving in Mallorca hoping to restart his career before circumstances turn him into an accidental investigator.

Among the other hotel guests are friends Elisa Mander and Adela Figueroa, Dr. Seruya and the German couple Mr. and Mrs. Klemmer. Basil enjoys Foxa’s enthusiasm but repeatedly reminds him that playing Holmes did not make him a real detective. That distinction becomes harder to maintain the following morning when Elisa is discovered dead in a locked pavilion. The circumstances initially point toward a self-inflicted death, particularly because a chair is positioned against the door and the room appears inaccessible from outside.

Basil begins noticing details that do not fit such a simple explanation. Elisa has a mark on her head, the table appears to have been moved, and she was still wearing expensive jewelry and carefully applied makeup. Dr. Seruya’s examination provides another crucial detail, while Basil discovers that the rope involved in the scene has mysteriously disappeared. He and Foxa secretly return to the pavilion and conclude that the rope had been tampered with before Elisa’s death, suggesting that somebody arranged the room to create a misleading impression.

Their questions soon reach the hotel staff. Waiter Tony admits that he and Elisa had shared a private moment, and an expensive ring from Elisa’s late husband ends up with Catalina. Basil initially sees this as suspicious, but the explanation ultimately makes Tony look more frightened than dangerous. Adela also tells Basil that Elisa had been married to a British RAF pilot and that the marriage ended during the war, while providing details about Elisa’s difficult past.

The investigation becomes stranger when Basil notices Dr. Seruya hiding information and money. Seruya privately asks Basil to meet him later that night, apparently ready to reveal something important. Basil waits, but the doctor never arrives. When Basil, Foxa and the others finally force their way toward Seruya’s locked room, they discover that the doctor has become the case’s second victim, ending Episode 1 with Basil realizing that whatever began with Elisa is far from over.

The Final Problem Episode 2

Episode 2 begins with the hotel guests turning on Basil. Some blame him for encouraging the investigation, while Basil argues that Seruya’s death proves someone at the hotel is actively trying to control what the others discover. The situation becomes even more personal when the object connected to Seruya’s death is slipped beneath Basil’s door. Instead of simply trying to conceal evidence, the culprit appears to be inviting Basil to continue playing detective.

Basil studies Seruya’s room and becomes convinced that the strange staging was intentional. The locked door and carefully positioned details resemble the kind of artificial puzzle Basil spent years solving as Sherlock Holmes on screen. He also begins investigating Seruya’s past in Tangier and the large amount of money connected to him, wondering whether the doctor had been pressuring another guest for payment.

Vicky then claims she saw Tony returning from the direction of the pavilion on the night Elisa died. Basil does not believe her. As an actor, he recognizes that her account feels performed rather than remembered, and Tony insists she is trying to direct suspicion toward him. Basil eventually pushes Vicky until she admits the real reason she is frightened of Dr. Seruya’s history. Years earlier, Seruya had been connected to a private medical procedure involving Vicky, and he later used the records to pressure Fonseca for money because public exposure could have damaged her career in the 1950s.

That revelation gives Fonseca a possible reason to resent Seruya, but another guest becomes increasingly important. Basil notices evidence suggesting that Mr. Klemmer had served in the SS during the Second World War. Klemmer angrily rejects the suggestion, but Basil is unconvinced. His interest in the German deepens when antisemitic tension surfaces around Seruya and when Klemmer reacts defensively to questions about his wartime history.

Fonseca suddenly disappears, creating another urgent problem. Vicky admits that he left earlier without telling the others, and Basil and Foxa separate to search the island. Fonseca is eventually found shaken and injured after an encounter outside, and he immediately assumes Klemmer was responsible despite being unable to identify his assailant clearly.

When the group returns to the hotel, the situation changes again. Klemmer is discovered dead inside the library, and a new message has been left nearby. What had begun as an apparently isolated incident involving Elisa has now expanded into three connected deaths, and Basil realizes that somebody is not merely covering tracks. The person behind the case appears to be constructing an elaborate game around him.

The Final Problem Episode 3

Basil begins Episode 3 by reconstructing what happened to Klemmer. He concludes that Fonseca’s disappearance was probably a diversion intended to draw people away from the hotel, leaving Klemmer vulnerable. The German was surprised from behind, and Basil eventually realizes that a weight from the hotel’s clock was used during the incident. Yet solving the physical question does little to answer the more important one: why were Elisa, Seruya and Klemmer all connected?

The guests decide that nobody should spend another night alone. Mrs. Auslander announces that the radio has finally been repaired and that police from Mallorca should arrive within hours, so everyone gathers in the dining room until help reaches Santa Agueda. Gerard, the hotel’s musician and bartender, offers Basil an unexpectedly useful piece of advice by comparing his investigation to greyhound racing. Basil may be chasing the clues placed directly in front of him when he should instead be asking who put those clues there.

That observation changes his approach. A coded note left near Klemmer points Basil toward Sherlock Holmes material, convincing him that the person behind the case knows his screen career and wants him to recognize the references. Foxa’s detective novel also disappears from Basil’s room, and Basil learns that Klemmer’s final scene closely resembles material in Foxa’s book. Suddenly, Basil begins wondering whether the writer who has enthusiastically played Watson beside him could actually be controlling the puzzle.

Foxa, however, develops the opposite theory. He points out that Basil has repeatedly identified crucial details before everyone else, including the missing rope, the object connected to Seruya’s room and the clock weight. Basil counters that Foxa had access to his own novel and opportunities to manipulate evidence. Their playful Holmes-and-Watson partnership collapses into mutual suspicion just before the police finally reach the island.

The officers are unimpressed with either man’s deductions. Basil accuses Foxa, Foxa raises suspicions about Basil, and investigators point out that neither theory is supported by enough evidence to justify an arrest. The case seems destined to remain unresolved when Mrs. Auslander gives Basil one final piece of information. Weeks earlier, someone claiming to represent a Jewish documentation organization had contacted the hotel specifically to ask whether Klemmer would be staying there.

That call confirms that Klemmer’s wartime past matters far more than Basil previously understood. Nevertheless, he has no time to pursue it before the guests are allowed to leave Santa Agueda. Basil departs believing the case has beaten him, but he refuses to call it finished. When Foxa compares their departure to the ending of a movie, Basil corrects him: they have reached only the end of the second act, because the climax is still missing.

The Final Problem Episode 4

Episode 4 moves away from Santa Agueda and back into Basil’s professional world. Fonseca turns the hotel case into a movie called Three Murders at Dawn, with Foxa writing the screenplay and Basil returning to acting. Recreating the events on a film set gives Basil something the original investigation never did: the chance to rebuild the first room exactly and test his assumptions without the pressure of the storm or another incident occurring.

Basil invites Adela to Spain and takes her through the recreated pavilion. While restaging Elisa’s final moments, he realizes that his original theory contained a fundamental mistake. Elisa may not have been surprised from behind at all. If she knew the person standing beside her, she would have had no reason to react when that person picked up an object or moved around the room. The missing shawl and the unusual marks near the door also explain how the room could have been manipulated to appear sealed after the culprit had left.

With the mechanical problem finally solved, Basil turns to motive. Seruya appears to have recognized what really happened in Elisa’s room and tried to profit from that knowledge, which explains why he became involved in the case. Klemmer’s history leads somewhere much more personal. Basil researches Elisa’s late husband, RAF pilot John T. Mander, and learns that he survived being brought down during the war only to become a prisoner. After an attempted escape, the order responsible for his fate was connected to Hans Ludwig Klemmer.

Basil then notices the clue that overturns the entire case. The real Elisa Mander was allergic to strawberries, yet the woman found dead at Santa Agueda had clearly eaten the strawberry dessert served at the hotel. He also remembers differences in the women’s hands and backgrounds. The person who died was not Elisa Mander at all.

Adela finally admits the truth. She is Elisa Mander, while the woman everyone thought was Elisa was the real Adela Figueroa. The two women resembled one another closely and had previously treated exchanging clothes and identities as a private game. Wealthy Adela enjoyed temporarily escaping the restrictions of her social position, while Elisa briefly experienced a life of money and comfort. Elisa eventually decided that the exchange should become permanent.

Her trip to Santa Agueda also gave her access to Klemmer, the man connected to her husband’s fate. Seruya complicated the plan after understanding too much, while Basil himself became something Elisa had not originally expected. Once she realized the famous Sherlock Holmes actor was on the island, she began shaping the later clues around him, turning the case into a personal challenge.

The final revelation explains why. Basil and Elisa had known each other years earlier, although Basil had completely forgotten her. When he was a successful young actor, Elisa was an aspiring performer who became involved with him after believing his promises that he could help her career. Basil eventually disappeared from her life and refused her calls, leaving Elisa with another memory of being treated as insignificant by someone with greater social power.

That history changes Basil’s response once he has finally solved the mystery. He understands that Elisa is responsible, but he also recognizes his own unresolved guilt and compares her to Irene Adler, the woman who famously outwitted Sherlock Holmes. Rather than immediately exposing her, Basil leaves her future uncertain, telling Elisa that he may reveal the truth one day or may carry it with him forever.

The series closes on that deliberately ambiguous arrangement. Basil finally proves that his years of playing Sherlock Holmes taught him enough to solve a genuine mystery, but the answer forces him to confront something more uncomfortable than professional failure. His greatest blind spot was never hidden inside the Hotel Auslander. It was the woman standing in front of him, someone he had once known and failed to truly see.