Apple TV+ has released an official trailer for the upcoming season 4 of Slow Horses, based on Spook Street, the fourth novel in Mick Herron's award-winning Slough House series. The six-episode season will premiere globally September 4 with the first episode, followed by one new episode weekly every Wednesday through October 9 on Apple TV+.
The returning ensemble cast includes Gary Oldman, Jack Lowden, Kristin Scott Thomas, Saskia Reeves, Rosalind Eleazar, Christopher Chung, Aimee-Ffion Edwards, Kadiff Kirwan, and Jonathan Pryce. Season 4 additions are Hugo Weaving, Joanna Scanlan, Ruth Bradley, Tom Brooke, and James Callis.
Slow Horses is produced for Apple TV+ by See-Saw Films and adapted for television by Will Smith (Veep). Jamie Laurenson, Hakan Kousetta, Iain Canning, Emile Sherman, Jane Robertson, Julian Stevens, Douglas Urbanski, Gail Mutrux, Graham Yost, and Smith serve as executive producers on the series. Season 4 is directed by Adam Randall. Apple TV+ previously announced a fifth season set to be adapted from Herron's fifth novel, London Rules.