'Slow Horses' Season 4 Shuffles Up Early, Debuts in September 2024

Just when Apple TV+ seemed to have gotten into a groove, the little streaming service that no one watches other than critics decided to shake things up. The streaming service has a small group of reliable hits among its offerings (hits being an extremely relative term), with Slow Horses being the biggest British drama on the roster since it debuted in April 2022. In fact, Slow Horses was such a big hit for the streaming service that Apple TV+ streamed Season 2 all of nine months later in December and greenlit Seasons 3 and 4. However, after that double dose, Apple held Season 3 (which was long finished) for a whole year until December 2023. Fans assumed the same would be true for Season 4, especially when Season 5 was greenlit directly following Season 3's finale.

However, Apple TV+ is once again upending expectations with a surprise announcement that Season 4 will arrive in September 2024, along with the rest of the major fall debuts across its rivals. Whether this is a sign that Apple TV+ thinks Slow Horses can hold its own in a crowded field, a lack of having anything else ready to go due to the 2023 strike, or a need to get the series up and out because there's a better option for the holiday season is unclear.

This means that fans who have been eagerly waiting to see what's next for the residents of Slough House will not have nearly as long a wait as they thought. Also, Season 5, which will cover the events of writer Mark Herron's fifth novel in the series, London Rules, is already prepping for production. Maybe this also means that the series will become a regular fall event.