The sixth season of “Slow Horses” is set to premiere on Apple TV on September 16, with new episodes rolling out weekly through October 21. The latest trailer reveals that the Slough House team faces a deadly threat as members of the agency are systematically targeted, forcing the group to go into hiding to survive.
According to the preview, protagonist Jackson Lamb, portrayed by Gary Oldman, confronts Diana Taverner about the mounting casualties within the organization. The season’s central conflict involves a revenge plot orchestrated by Taverner that puts every current and former Slough House operative in mortal danger. As the team scrambles to locate and warn their former colleagues, they quickly realize the scope of the danger extends far beyond their immediate circle.
The trailer marks a significant development with the return of Olivia Cooke in the role of Sid, a character absent since the show’s debut season in 2022. Additional returning cast members include Rosalind Eleazar and Joanna Scanlan. The ensemble continues to feature Gary Oldman, Jack Lowden, Kristin Scott Thomas, and Saskia Reeves, with BAFTA winner Lenny Rush joining as a new cast member this season.
The spy thriller, adapted from Mick Herron’s novels and directed by Adam Randall, continues to garner critical acclaim. The previous season earned nine Emmy nominations, including outstanding drama series recognition.
