Agatha Christie's Upcoming Adaptation Solves Two Murder Mystery Problems At Once

Published Sep 2, 2026, 6:58 PM EDT Cathal Gunning has been writing about movies, television, culture, and politics online and in print since 2017. He worked as a Senior Editor in Adbusters Media Foundation from 2018-2019 and wrote for WhatCulture in early 2020. He has been a Senior Features Writer for ScreenRant since 2020. While there is no shortage of Agatha Christie adaptations for viewers to choose from, one upcoming show has already fixed two problems that held many of the iconic mystery author’s recent shows and movies back from greatness. Viewers and readers need not go far to find proof that Agatha Christie is just as influential in 2026 as she was at the height of her fame a century ago. Not only is the author still one of the bestselling novelists in history, but the murder mystery novel blueprint that she established went on to shape the genre on TV and in film, too. TV’s most iconic underestimated detectives like Columbo’s title character and Murder She Wrote’s Jessica Fletcher owe their inspiration to the archetype established by Christie’s Hercule Poirot and Miss Marple, characters whose peculiar personal peccadilloes belied razor-sharp instincts and an eye for observation that could compete with Sherlock Holmes. Meanwhile, the murder mystery template found in Christie’s darkest novel, 1939’s And Then There Were None, directly inspired one of the most iconic slasher movies ever made, 1980’s Friday the 13th. By extension, And Then There Were None ended up influencing the entire slasher horror subgenre, as well as shaping darker, more mature murder mystery shows like Sharp Objects and His & Hers. As such, 2026’s upcoming adaptation Agatha Christie’s Tommy & Tuppence has a large legacy to live up to. Agatha Christie’s Tommy & Tuppence Is Wisely Set In The Present Day A pair of amateur sleuths, Tommy and Tuppence aren’t quite as instantly recognizable as Miss Marple and Poirot, but they were just as popular in their heyday. The duo were the amateur sleuths at the center of Christie’s novels The Secret Adversary, Partners in Crime, N or M, By the Pricking of My Thumbs, and Postern of Fate, with Thomas being the somewhat dim but loyal husband while Prudence was the charismatic but overly imaginative heroine. Between them, the pair were perfectly balanced, as Thomas’s sensibility and, ironically, prudence tempered Prudence’s wilder flights of fancy, while Prudence’s daring attitude got the pair involved in the dirty business of solving murders in the first place. While the much more meta upcoming murder mystery series The Detection Club casts a fictionalized version of the real-life Christie as its heroine, the BritBox production Agatha Christie’s Tommy & Tuppence is taking a more straightforward approach. Agatha Christie’s Tommy & Tuppence stars Antonia Thomas and Josh Dylan as the titular sleuths, although the trailer reveals a few judicious plot changes that are sure to have even longtime Christie fans guessing. For one thing, not only are the duo not a pair of loved-up newlyweds anymore, but Prudence is already married to someone else in this version of their story. Furthermore, in the biggest divergence from the source novels, Agatha Christie’s Tommy & Tuppence is set in the present day instead of being a 1920s period piece. While the period piece trappings of adaptations like Netflix’s recent Agatha Christie’s Seven Dials or Kenneth Branagh’s trio of Poirot movies can be fun, they’re not necessarily true to Christie’s original books. Bear in mind, the settings of Christie’s novels were contemporary when the books were first written and published. Agatha Christie’s Tommy & Tuppence Balances Comedy and Suspense Credit: Lara Cornell/Courtesy of BritBox Nowadays, the name Agatha Christie is synonymous with stories set in the 1920s, 30s, and 40s, whether this means genteel British comedies of manners or darker post-war plots. However, it is important to note that Christie’s works weren’t considered period pieces when they were first published. On the contrary, the author very much moved with the times, with her later, darker books like the Poirot novel Hallowe’en Party even taking aim at the social upheavals of the Swinging Sixties. As such, there’s an argument to be made that modern shows and movies inspired by Christie, like the Knives Out series or Death In Paradise, are arguably more faithful than the adaptations that focus on the major differences between life in the early 20th century and contemporary living. By highlighting the historical setting of the original novels, these adaptations can end up feeling staid and nostalgic where Christie’s books were, at the time, lively and thoroughly modern. This gets at another positive change Agatha Christie’s Tommy & Tuppence has seemingly made to the modern adaptation template, namely, the reintroduction of the author’s sparkling sense of humor. Christie’s books are, by definition, murder mysteries, so none of them lack stakes, suspense, or moments of tragedy. However, they’re also often laugh of loud funny, something that is frequently lost in modern translations. The success of shows like True Detective, Sharp Objects, The Killing, Mindhunter and Mare of Easttown resulted in a string of increasingly dark, portentous murder mysteries in the late 2010s and early 2020s, and this has resulted in some comically misguided attempts to fuse this approach with Christie’s far more playful style. To be fair, 2015’s And Then There Were None worked since the original novel is an anomaly in Christie’s canon, as her darkest and bleakest book by far. Agatha Christie’s Tommy & Tuppence Can Capture The Author’s Murder Mystery Style Perfectly Credit: Lara Cornell/Courtesy of BritBox However, 2018’s The ABC Murders made the famously fun Christie feel more like True Detective and was a complete failure as a result, wasting the inspired casting of John Malkovich as Poirot in a story that managed to make a hypnotized serial killer into something more dour and downbeat than enjoyable ludicrous. 2017’s Murder on the Orient Express wasn’t as bad, but the Branagh movie did take its central storyline too seriously and lose the original appeal of Christie’s novel as a result. Luckily, after these attempts to turn the author’s fun murder mysteries into something as gruesome as CSI or Scarpetta, Agatha Christie’s Tommy & Tuppence now seems set to faithfully capture the author’s original appeal. Blending sparky interplay between colorful characters with a propulsive central mystery and humor that keeps it tongue firmly in cheek throughout, the show has the potential to be the author’s best adaptation in some time. Only time will tell whether this BritBox production ends up falling too far down the twee or dark ends of the tonal scale to feel true to Christie’s writing. However, the present-day setting and mercifully humorous tone of Agatha Christie’s Tommy & Tuppence seemingly bode well for the show’s chances at success. Release Date September 15, 2026 Cast Fola Evans-Akingbola Tatiana Alara-Star Khan Hetty Copleigh