LONDON — Prepare for the most acrimonious split in television history. HBO and Sky have officially released the first trailer and first-look images for War, a highly anticipated eight-part legal drama that transforms the dissolution of a high-profile marriage into a cutthroat battlefield.

The series stars Dominic West as tech entrepreneur Morgan Henderson and Sienna Miller as film star Carla Duval, a power couple whose seemingly perfect life implodes in a spectacular public fashion. As the couple engages in a brutal tug-of-war over their empire, the narrative shifts its focus to the elite London law firms representing them: Cathcarts & Sons and Taylor & Byrne.

“You are the wronged party here,” echoes through the trailer, setting the stage for a ruthless world where ambition is currency, betrayal is strategy, and winning is the only acceptable outcome.

A New Generation of Legal Sharks

Caught in the crossfire is Jonathan “Johnny” Warren, a young and hungry lawyer played by Archie Renaux. As Johnny navigates the litigation of the century, he is pulled into a morally ambiguous environment where the personal lives of the wealthy elite are weaponized for leverage. The ensemble cast reads like a masterclass in British talent, featuring Phoebe Fox, James McArdle, Nina Sosanya, Pip Torrens, Celia Imrie, and Nick Mohammed.

Created, written, and executive-produced by George Kay (Lupin, Killing Eve), the series is directed by Ben Taylor and produced by Banijay-owned New Pictures alongside Observatory Pictures. It promises to be a sharp, satirical, and deeply compelling look at the intersection of wealth, fame, and the family court system.

Release Details and Season 2 Renewal

War is scheduled to premiere on October 1 on HBO and HBO Max in the U.S., followed by an October 2 debut on Sky in the UK. In a rare show of confidence, the networks have already greenlit Season 2, which is currently in production. The next chapter will introduce a new explosive defamation case featuring Marisa Tomei, Kelly Macdonald, and David Harewood as the next victims of London’s most aggressive legal minds.

The Official Announcement

'War' First Look & Trailer: Dominic West & Sienna Miller Do Battle In HBO/Sky Divorce Drama deadline.com

— DEADLINE (@DEADLINE) August 6, 2026

Further reading: Read the full casting and release breakdown at Deadline.