HBO premiered its new anthology drama series War on October 1, 2026. The show stars Dominic West and Sienna Miller as a high-profile couple locked in an acrimonious divorce battle over a massive fortune. Created by showrunner George Kay, the eight-episode first season centers on tech titan Morgan Henderson, played by West, and his actress wife, Carla Duval, played by Miller. The narrative follows their contentious legal split, which involves high-stakes maneuvering from opposing London law firms.
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Verify & Continue ReadingMorgan Henderson built his wealth through a successful social media application. Meanwhile, Carla Duval faces a recent downturn in her acting career. As the pair separates, two distinct legal teams attempt to secure control over the substantial financial assets involved in the estate. The logline for the series establishes the fierce tone: “Two rival London law firms take on the case of the century. In a world of love, scandal, betrayal, and ambition, winning is everything. This is WAR.”
The Cast and Rival Law Firms in War
The series splits its focus between the fracturing relationship of its central couple and the ruthlessly competitive legal teams representing them. Morgan retains the services of Cathcarts & Sons, an old-school, traditional firm characterized by oak-paneled offices. Pip Torrens stars as the scheming St. John Smallwood, alongside Nina Sosanya as Queen Beatrice “Queen Bea” Ubosi. This team utilizes sharp, tactical maneuvers to protect their client’s vast interests.
On the opposing side, Carla instructs Taylor & Byrne, a younger, shinier, upstart firm run by married partners Serena Byrne, played by Phoebe Fox, and Nicholas Taylor, played by James McArdle. The firm also features Archie Renaux as Johnny Warren, an ambitious junior lawyer navigating the high-pressure environment. The ensemble cast further includes Aran Murphy as Carla’s son Gabriel, alongside Celia Imrie, Nick Mohammed, Emma Laird, Archie Panjabi, and Adrian Scarborough.
Production Background and Creative Team
George Kay created, wrote, and executive produced the series. He is known for his work on Lupin and Hijack. War is structured as an anthology-style series centered on headline-making legal battles. Ben Taylor serves as the lead director and an executive producer. This co-production between HBO and Sky has generated significant attention for its fast-paced plotting, sharp dialogue, and exploration of wealth, class warfare, and legal strategy.
New episodes of the eight-episode first season air on Thursdays at 9:00 PM ET/PT on HBO and Max in the United States. They are also available simultaneously across Sky platforms in the United Kingdom, Ireland, Italy, Germany, Switzerland, and Austria, as well as Max in Australia.
Frequently Asked Questions About HBO’s War
When did HBO’s War premiere?
War officially premiered on October 1, 2026, with new episodes airing weekly on Thursdays.
Who stars in HBO’s War Season 1?
The first season stars Dominic West as tech mogul Morgan Henderson and Sienna Miller as actress Carla Duval. The supporting cast features Phoebe Fox, James McArdle, Nina Sosanya, Pip Torrens, and Archie Renaux.
Who created the series War?
The legal thriller series was created, written, and executive produced by George Kay, who is also known for creating Hijack and Lupin.
How many episodes are in Season 1 of War?
The first season of the anthology legal drama consists of eight episodes.
What are the rival law firms featured in the show?
The series centers on a fierce legal battle between the traditional firm Cathcarts & Sons and the modern, upstart firm Taylor & Byrne.
