Netflix’s ‘The Final Problem’ Blends Knives Out Flair with Only Murders in the Building Vibes
Netflix’s new Spanish mystery, The Final Problem, mixes classic whodunit intrigue with a semi‑retired actor’s comeback, delivering a fresh genre twist.

The Final Problem dropped on Netflix on September 25, 2026, a Spanish period mystery that feels like Knives Out meets Only Murders in the Building. It follows semi‑retired actor Benjamin Basil, once famed for playing Sherlock Holmes, who travels to a remote Mallorca island and gets pulled into a murder investigation when guest Elisa Mander is found dead. The series blends a 1959 setting, locked‑room tension, and a witty ensemble, positioning it as a fresh entry in the streaming mystery boom and a potential new go‑to for fans of clever whodunits.
What happened
Netflix released The Final Problem, a Spanish series adapted from Arturo Pérez‑Reverte’s novel, on September 25, 2026. The story centers on Benjamin Basil (José Coronado), a former star of Sherlock Holmes films who hopes to revive his career by visiting a secluded hotel on an island near Mallorca.
When quiet English tourist Elisa Mander is discovered dead, what appears to be a suicide quickly turns into a murder. A storm forces the hotel into lockdown, isolating the guests and staff while Basil steps into his detective role, interrogating each suspect and piecing together clues hidden in the 1959 setting.
The series has generated buzz for its stylish period design, tight plotting, and the way it balances homage to classic whodunits with fresh, character‑driven humor.
Why it matters
The Final Problem signals Netflix’s commitment to high‑quality international productions that can compete with Hollywood‑style mysteries. By marrying a nostalgic 1950s backdrop with modern storytelling, the series expands the streaming catalog’s genre diversity and offers English‑speaking audiences a compelling non‑English option. Its success could encourage more adaptations of literary thrillers from Spain and other markets, broadening representation on a global platform.
- José Coronado delivers a charismatic, layered lead performance.
- Authentic 1959 Mallorca atmosphere enriches the visual storytelling.
- Twists reward attentive viewers and keep the mystery fresh.
- Pacing slows during the middle episodes, testing patience.
- Some supporting characters lack full development.
- Reliance on subtitles may deter viewers who prefer dubbing.
How to think about it
Approach the series as a puzzle: note recurring symbols, listen for off‑hand remarks that later become clues, and compare Basil’s investigative methods to classic detectives. Discuss each episode’s red herrings with friends to sharpen your deduction skills, and use the show as a springboard to explore other mystery staples like Knives Out or Only Murders in the Building.
FAQ
Do I need to have seen the Knives Out movies to enjoy The Final Problem?+
Is the series available only with subtitles or is there a dubbed version?+
How is the episode format structured?+
Streaming availability changes constantly. Check where it's playing right now — subscription, rent, or buy:
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