Sienna Miller and Dominic West star as a wealthy couple tearing each other apart in War, an eight-part legal thriller from Sky and HBO that premieres 1 October on HBO in the US and 2 October on Sky in the UK, rolling out weekly. Variety

First-look images released on 6 August show Miller and West as a high-net-worth couple navigating a brutal divorce — she through the law firm Taylor & Byrne, he through Cathcarts & Sons. The show is an anthology, meaning each season tackles a different legal case. Season 1's divorce was inspired by something creator George Kay overheard in real life: a woman celebrating that her husband had finally signed divorce papers after four years. Variety

A second season has already been greenlit, which is unusual — most shows wait for ratings before a renewal order comes through. Season 2 will follow the same lawyers as they take on a defamation suit rather than a divorce. Sky confirmed the two-series order in its own announcement of the project. Variety; Sky

George Kay created, wrote, and executive-produced War. He is the co-creator of Hijack, the Idris Elba thriller that aired on Apple TV+, and the creator of Lupin, the French heist series that became a global hit on Netflix. Kay has described War as a high-end legal show in the tradition of The Good Wife and Ally McBeal. Variety; The Wrap

West plays Morgan Henderson, a tech titan whose marriage is collapsing. Miller's recent credits include Anatomy of a Scandal on Netflix and American Sniper. Marisa Tomei, Kelly Macdonald, and David Harewood guest-star in Season 1 as clients caught in the legal machinery. Variety; Sky

The series is produced by New Pictures — a Banijay company — and Observatory Pictures, in association with Sky and HBO. NBCUniversal Global TV Distribution is handling global sales. Season 1 will be available across Sky's European territories including Ireland, Italy, Germany, Switzerland, Austria, France, and Belgium, along with Australia and Asia. Variety

For viewers, the two-season order means the lawyers of Taylor & Byrne and Cathcarts & Sons are not going anywhere after the Henderson divorce wraps. The anthology format lets Kay bring a fresh case each season while keeping the firms — and their rivalries — intact.