Apple TV+ hit Slow Horses returns for its sixth season tonight at 9 p.m. ET. The spy drama, which premiered in 2022, has become one of the streamer's most acclaimed series. In a rare move, Apple has already greenlit seasons 7 and 8 ahead of the season 6 premiere.

Season 8 will adapt the final novel in Mick Herron's "Slough House" series, titled "Clown Town." The sixth season consists of six episodes, continuing the show's tight, short format. Based on Apple's typical release pattern, season 7 is expected in 2027, followed by season 8 in 2028. Fans can watch the new episodes once available tonight.

Apple TV+ subscriptions start at $14.99 per month or via the Apple One bundle.