Firebrand premiered at the 76th Cannes Film Festival on 21 May 2023, where it was selected to compete for Palme d'Or. It was released in the United Kingdom on 6 September 2024.
When the king returns, increasingly ill and paranoid, Katherine finds herself fighting for her own survival as Henry's courtiers increasingly try to turn the king against her. Katherine becomes pregnant, but has a miscarriage shortly after.
Bishop Gardiner believes Katherine’s religious views are dangerous, and convinces Henry to have her arrested. She is locked in a dungeon, but Henry soon frees her. Afraid for her future, she goes to his bedside and kills him.
Firebrand was selected to compete for the Palme d'Or at the 2023 Cannes Film Festival,[8] where it had its world premiere on 21 May 2023.[9]FilmNation Entertainment sold the film to STXinternational for the United Kingdom and to Sony Pictures Worldwide Acquisitions for multiple markets including Germany and Asia excluding Japan and independent distributors elsewhere. Amazon Prime Video was rumoured to have been in negotiations to acquire UK rights from STX, but it was later revealed the deal had already taken place in 2022.[10][11] It was released in cinemas in the United Kingdom on 6 September 2024.[1]
On the review aggregator website Rotten Tomatoes, 55% of 58 critics' reviews are positive, with an average rating of 5.6/10. The website's consensus reads: "Divorced from the historical record with little to show for it, Firebrand is a period piece whose revisionist aims are at odds with its stultifying approach."[13]Metacritic, which uses a weighted average, assigned the film a score of 61 out of 100, based on 13 critics, indicating "generally favorable" reviews.[14]