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Agatha Christie’s Towards Zero is a three-part limited series adapting Christie’s 1944 novel. Set in 1936, it brings a group of people with unsettled relationships together at a coastal estate before a murder draws detective James Leach into their secrets. Official pages list BBC iPlayer and BBC One in the UK and BritBox in the United States and Canada; check the relevant service for current availability.
What is Towards Zero about?
The series is set in England in 1936, at Gull’s Point, the seaside home of Lady Tressilian. After a scandalous divorce, Nevile Strange and his former wife, Audrey, both spend the summer there. Nevile’s new wife, Kay, and other guests join them, bringing competing loyalties and old tensions into the household. When a murder occurs, detective James Leach investigates.
The official synopsis sets up a classic country-house gathering with a coastal setting: the people around Lady Tressilian are connected by unresolved histories, and the murder turns those tensions into a mystery. That is the spoiler-light premise; the official summaries do not require revealing the solution.
Is the series based on a book?
Yes. The limited series adapts Agatha Christie’s novel Towards Zero, which Mammoth Screen dates to 1944. Readers interested in the source can look for the novel under that title; the official materials establish the book-to-series relationship but do not confirm a particular edition, seller, price, or stock.
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Where can you watch Agatha Christie’s Towards Zero?
The official series page says the episodes arrived on BBC iPlayer on March 2, with BBC One broadcasts weekly from 9 p.m. that evening. It also says BritBox began airing the series on April 16 and describes BritBox International availability in the United States and Canada. These are the release and territory details stated on the official page, not a guarantee of what is currently in each catalog.
- United Kingdom: BBC iPlayer and BBC One are the listed services.
- United States and Canada: BritBox is the listed service. Its US listing and viewing page are available at BritBox’s series page and BritBox’s watch page.
Because streaming catalogs can change, check the service for your country before subscribing or planning a watch.
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Who is in the cast?
The BritBox US listing names the following principal cast and roles:
- Anjelica Huston as Lady Camilla Tressilian
- Matthew Rhys as Inspector Leach
- Oliver Jackson-Cohen as Nevile Strange
- Ella Lily Hyland as Audrey Strange
- Mimi Keene as Kay Elliott-Strange
- Anjana Vasan as Mary Aldin
- Jackie Clune as Mrs. Barrett
- Grace Doherty as Sylvia
- Jack Farthing as Thomas Royde
- Clarke Peters as Mr. Treves
Who made the adaptation?
Rachel Bennette wrote the adaptation and Sam Yates directed it. Rebecca Durbin produced the series. Mammoth Screen and Agatha Christie Limited made it for BBC One and BritBox International, which co-commissioned it.
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The executive producers named on the official series page are James Prichard for Agatha Christie Limited; Sheena Bucktowonsing and Damien Timmer for Mammoth Screen; Danielle Scott-Haughton for the BBC; and Jon Farrar, Stephen Nye, and Robert Schildhouse for BritBox International. FIFTH SEASON handles global distribution.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What is established about its reception?
The official series, platform, and production pages cited here do not provide a standalone audience or performance statistic for Towards Zero. A viewer figure mentioned on the Agatha Christie Limited page concerns the earlier series Murder Is Easy, not this adaptation, so it should not be attributed to Towards Zero.
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Official series information
- Agatha Christie Limited: Towards Zero — synopsis, credits, release and territory information.
- Mammoth Screen: Towards Zero — production description and the source novel’s publication year.
- BritBox: Agatha Christie’s Towards Zero S1 — US listing and cast information.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.




