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Let’s talk for a sec about how utterly thrilled I am that the Tommy & Tuppence books are officially getting a TV adaptation (dances in bookworm heaven) this fall.
As a major Agatha Christie fan, I’ve always found myself particularly drawn to this fictional detective couple, who spend their days solving crimes, as well as the mysteries of love. Cue the Sufjan Stevens song. Let's get into all the details you need to know before this show hits BritBox this September!
Here's everything you need to know about Tommy & Tuppence, coming to BritBox in September 2026.
When can I watch Tommy & Tuppence?
Courtesy of BritBox
This September, the Queen of Crime is getting the royal treatment. BritBox is rolling out "Eras of Agatha Christie," a month-long celebration leading up to the September 15 premiere of Agatha Christie’s Tommy & Tuppence on the author's birthday. Starring Josh Dylan as Tommy and Antonia Thomas as Tuppence, the highly anticipated new adaptation brings Christie’s iconic, dynamic duo into the 21st century.
Alongside the premiere, fans can dive into a massive lineup spanning classic comfort watches and modern hits, including ready-to-stream classics like Marple and Poirot, alongside a new generation of Christie adaptations: Why Didn’t They Ask Evans? (2022), Murder Is Easy (2023) and Towards Zero (2025). Explore a different flavor of suspense each week through themed spotlights like “A Taste for Poison,” “Secrets & Spies,” “Destination: Murder,” “Murders in the Village,” and “Her Darker Side.”
What is Tommy & Tuppence About?
Courtesy of BritBox
The beloved Tommy and Tuppence books focus on the titular characters, who have essentially grown up together. Despite being childhood friends, it isn’t until they hit their 20s that they begin to realize their romantic feelings for one another. After finally tying the knot, we get to embark upon the newlyweds’ journey as they navigate the growing pains of being husband and wife. No matter how much they adore one another, marriage still comes with its hurdles, no?
But instead of their problems revolving around who forgot to clean the kitchen sink or why Tommy stared a little too long at the attractive new neighbor next door, Christie’s couple explores an entirely different set of obstacles… AKA, trying to crack the top crime mysteries of the century. Will this detective couple be able to solve the toughest criminal cases while at the same time navigate married life with one another? This beloved detective/romance hybrid genre will uncover that very question.
Who's Is In The Tommy & Tuppence Cast?
Courtesy of BritBox
- Imelda Staunton (Aunt Ada) is widely celebrated for her iconic turn as the villainous Professor Dolores Umbridge in the Harry Potter film series, as well as her acclaimed portrayal of Queen Elizabeth II in the final seasons of The Crown and her Oscar-nominated role in Vera Drake.
- Antonia Thomas (Tuppence) is best known for her standout roles as Evie in the hit comedy-drama Lovesick and as Dr. Claire Browne in the medical drama The Good Doctor.
- Josh Dylan (Tommy) is recognizable for playing the younger version of Bill Anderson in Mamma Mia! Here We Go Again and for his roles in series like The End of the F*ing World and Noughts + Crosses.
How many Tommy and Tuppence books did Agatha Christie write?
Courtesy of BritBox
Tommy and Tuppence appear in five Agatha Christie books:
Loving all things mystery? Here are The Most Popular Agatha Christie Books That'll Keep You Guessing.
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This article has been updated.
