We just got great news about one of Apple TV+’s best shows, Slow Horses

The spooks who work in Slough House on Apple TV+'s masterful spy drama Slow Horses have had to grapple during previous seasons with everything from brilliant Russian terrorists to the fallout from a power struggle at MI5. For the new season, which Apple has revealed will debut on the streamer on September 4, it feels only right that the story would move forward by returning to the past -- specifically, by spending a lot more time with a heretofore criminally underused side character.

David Cartwright...