Quick answer · Season 1

Agatha Christie's Tommy & Tuppence season 1 ran from September 15, 2026 to October 13, 2026 on BritBox (6 episodes).

U.S. premiere: September 15, 2026
Where: BritBox
Time: Not announced
Episodes: 6
Finale: October 13, 2026

Based on a book? YesAgatha Christie's Tommy & Tuppence is based on the Tommy and Tuppence novels and stories by Agatha Christie.See the book and reading order →

Where to watch Agatha Christie's Tommy & Tuppence season 1 in the U.S.

Where to watch Agatha Christie's Tommy & Tuppence season 1 in the U.S.
Where	How	When	Notes
BritBox	Streaming, weeklySubscription	September 15, 2026 Tuesdays	Two-episode premiere, then weekly. [1][2][4]

Season 1 episode schedule

Agatha Christie's Tommy & Tuppence season 1 U.S. episode schedule
Ep.	U.S. date	Time	Status
1	Tue, Sep 15, 2026 ^[1]	Time not announced	Announced
2	Tue, Sep 15, 2026 ^[1]	Time not announced	Announced
3	Tue, Sep 22, 2026 ^[2][4]	Time not announced	Projected
4	Tue, Sep 29, 2026 ^[2][4]	Time not announced	Projected
5	Tue, Oct 6, 2026 ^[2][4]	Time not announced	Projected
6	Tue, Oct 13, 2026 ^[2][4]	Time not announced	Projected

"Projected" dates follow the announced weekly pattern but were not individually listed by the platform. We replace them when a listing is published.

Dates are U.S. dates. Broadcast times are the network's national slot; your local station may differ.

About Agatha Christie's Tommy & Tuppence

A contemporary adaptation of Agatha Christie's Tommy and Tuppence stories, with Antonia Thomas and Josh Dylan as the amateur detectives and Imelda Staunton as Aunt Ada. It was produced by Lookout Point in association with Agatha Christie Limited and premiered in North America on BritBox.

Season 1: Six episodes of about 45 minutes. Two premiered on September 15, 2026, and the remaining four follow weekly on Tuesdays.

Originally from: BritBox (North American premiere) (first aired September 15, 2026)
Based on: Agatha Christie's Tommy and Tuppence stories
Cast: Antonia Thomas (Tuppence), Josh Dylan (Tommy), Imelda Staunton (Aunt Ada)

Common questions

Where can I watch Tommy & Tuppence in the U.S.?

On BritBox, which premiered the series in North America on September 15, 2026.

When is the last episode?

With two episodes at launch and weekly Tuesday releases after that, episode 6 falls on October 13, 2026. That date is derived from the announced pattern.

Has it aired in the U.K.?

Not when we checked; the U.K. release was listed as to be confirmed.

When was the first episode of Agatha Christie's Tommy & Tuppence season 1?

Season 1 episode 1 premiered on Tuesday, September 15, 2026 on BritBox.

How many episodes are in Agatha Christie's Tommy & Tuppence season 1?

Season 1 has 6 episodes; the finale aired on Tuesday, October 13, 2026.