In this season, the team faces a potential terrorist attack on a shopping mall while grappling with personal issues and street riots.

River Cartwright must confront his grandfather's fears of a conspiracy related to the bombing, all while dealing with the elder Cartwright's declining mental state.

The teaser for the new season hints at significant tension, suggesting that one team member may not survive the events.

Returning cast members include Kristin Scott Thomas, Jack Lowden, and Jonathan Pryce, alongside new additions like Hugo Weaving and Ruth Bradley.

The series is produced by See-Saw Films, adapted for television by Will Smith, and directed by Adam Randall for this season.

Since its debut in 2022, 'Slow Horses' has received critical acclaim, boasting a 97% score on Rotten Tomatoes and winning two BAFTA Television Awards.

Additionally, the fifth season of 'Slow Horses' has already been renewed and filmed, indicating the show's ongoing popularity.

The upcoming fourth season of 'Slow Horses' is based on Mick Herron's novel 'Spook Street' and is set to premiere globally on September 4, 2024.

Viewers can expect two episodes available at launch, with subsequent episodes released weekly until October 9, 2024.

Gary Oldman reprises his role as Jackson Lamb, the eccentric leader of MI5's outcast agents known as the Slow Horses.

Season 4 opens with a deadly bombing that uncovers personal secrets, destabilizing the already precarious Slough House.