Slow Horses season 6 episode 2, titled "Daddy Issues," became available on Apple TV+ on Wednesday, September 23, 2026. The episode escalates the season's central plot as Jackson Lamb's Slough House team responds to the reemergence of Frank Harkness and a suspicious string of murders that put the unit on high alert. Season 6 premiered September 16, 2026 and runs six episodes on a weekly schedule through the finale on October 21, 2026; episode 3, "Resurrection," is due September 30, 2026. Apple TV+ remains the series' exclusive streamer, with new installments typically appearing very early Wednesday mornings in U.S. time zones and sometimes surfacing the evening before. The season frames Diana Taverner pulling the Slow Horses into a deadly game of retaliation and revenge, a premise already building across the first two episodes.
