Agatha Christie's timeless mysteries continue to captivate audiences, and BritBox is once again proving to be the ultimate destination for fans of the Queen of Crime. The streaming service, already home to a treasure trove of classic adaptations, is now gearing up to debut a fresh take on one of Christie's most beloved detective pairs. Tommy & Tuppence is set to premiere on September 15, 2026, and it promises to bring a contemporary spark to the classic characters.

Starring Josh Dylan and Antonia Thomas as the titular duo, the series follows Tommy and Tuppence Beresford, a married couple who stumble into the world of amateur sleuthing. While Christie's more famous detectives like Hercule Poirot and Miss Marple are known for their unwavering methods, Tommy and Tuppence were always a bit different—they aged in real time across Christie's novels, from their youthful adventures in The Secret Adversary (1922) to their later years in Postern of Fate (1973). This new series, however, drops them right at the beginning of their crime-solving journey, capturing their youthful energy and undeniable chemistry.

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According to the official synopsis, the couple "fall in love, fall out of it, and tumble back in, all while solving some thrilling, entertaining mysteries along the way." It's a blend of romance, wit, and suspense that has made the characters so endearing to readers for over a century. The series also introduces Aunt Ada, played by the always-excellent Imelda Staunton, a retired private investigator who serves as their mentor and occasional voice of reason. The supporting cast includes Nicholas Richardson, Charlie Condou, Callie Cooke, and Chizzy Akudolu, rounding out a stellar ensemble.

What truly sets this adaptation apart is its modern setting. Previous adaptations, such as the 1983 series Agatha Christie’s Partners in Crime and the 2015 update starring David Walliams and Jessica Raine, kept the period charm intact. Tommy & Tuppence, however, transports the duo into the 21st century, giving their adventures a fresh, contemporary feel. Writer Phoebe Eclair-Powell expressed her excitement, saying, "To bring Tommy and Tuppence into the twenty-first century is truly an honor. Christie's detective duo are witty, sharp and raring to solve lots and lots of murders whilst asking if they should really be more than just Partners in Crime."

Executive producer Katie Draper echoed that enthusiasm, praising Eclair-Powell's scripts for blending "screwball comedy, playful romance and thrilling murder" into an exhilarating modern-day twist. Robert Schildhouse, President of BritBox North America and General Manager of BritBox International, added, "With Phoebe Eclair-Powell’s superb writing and Lookout Point’s stellar production team, this series promises to be a fun blend of romance and mystery. We can’t wait for BritBox audiences to fall in love with Tommy and Tuppence all over again as they navigate murder, mystery, and mischief."

For those who can't get enough of Christie's work, BritBox has plenty more to offer. The platform is also developing Hercule, a series featuring a younger Poirot played by Edward Bluemel, which is sure to satisfy fans of the iconic Belgian detective. And if you're in the mood for more classic mystery recommendations, check out our list of one-season mystery gems that are perfect for a binge-watching session.

With its winning combination of a talented cast, a beloved source material, and a modern twist, Tommy & Tuppence is poised to become BritBox's next big hit. It's a fresh take that honors the spirit of Christie's original characters while introducing them to a whole new generation of viewers. Whether you're a longtime fan or new to the world of Tommy and Tuppence, this series is one to watch.

Mark your calendars for September 15, 2026, and get ready to fall in love with these charming detectives all over again. For more on Christie's enduring legacy, don't miss our piece on an Agatha Christie mystery that deserves an adaptation.