The 'Slow Horses' Season 4 Trailer Takes Us Down to 'Spook Street'

It's no secret in the industry that Apple TV+ is the most lavish spender of the technology companies who jumped into the streaming service game, even more than Amazon. After an unfortunate launch in 2019, where the service only offered a paltry four series, all of which felt like what someone assumed "prestige TV" looked like instead of looking at the individual shows themselves, Apple went on a hiring spree where they boarded multiple former HBO producers and talent (all of whom were escaping the coming AT&T-Warner Bros. Discovery debacle). Since then, the service has launched some of the highest-end shows imaginable, with spectacular casts, only to see its viewership surpassed by everyone, including Tubi. Eventually, this commitment to art over money will come to an end. However, until then, we will still have a few more months of spectacular viewing, including two more seasons of Slow Horses, one of Apple TV+'s only mainstream hits.

Based on Mick Herron's novel series, Slow Horses has spent the last three seasons tracing the antics of the residents of Slough House, the place MI-5 puts their incompetent spies, whom they can't fire for various reasons. Herron has 13 novels and short stories, and the series covers one novel per season; Season 4 adapts book four, Spook Street. Season 3, which covered Real Tigers, revealed a major in-house betrayal and ended with massive explosions and a firefight. Season 4 will return to the aftermath of the choices made by the two men who run Slough House, Jackson Lamb (Gary Oldman) and River Cartwright (Jack Lowden).

With the show moving from the December berth occupied by Seasons 2 and 3 to a September debut for Season 4, the trailer is out, and Lamb has found himself back to relying on his old tricks once more to navigate the rapidly shifting landscape.