Slow Horses Season 4: Renewal, Cast, & Everything We Know

Apple TV+’s hit spy series Slow Horses is coming back for a fourth season, and there have already been several exciting updates about the cast and story. Debuting in 2022 and based on the novel series Slough House by Mick Herron, the show follows a misfit band of MI5 agents as they try to protect England from threats both foreign and domestic, while also dealing with their strange boss. Anchored by legendary character actor Gary Oldman, Slow Horses turns the spy genre on its ear with humor without sacrificing any pulse-pounding thrills.