Watched: Slow Horses Season 6 📺 The show is as perfect as ever, in its own way. It’s the best show on Apple TV that you’re probably not watching. Horses has everything: flawed people, workplace comedy, spy thriller stuff. And it asks the questions not typical in the spy genre: who are the people behind the extremely well-coifed spies, how do they keep getting away with all this, what if they all became a kind of begrudging workplace family in the end?