By season’s end, “Slow Horses” feels more familiar than truly innovative, albeit with some sharper acting and jokes than most others it’s following. Case in point is the show’s choice to cast Gary ...

SPOILER ALERT: The following story contains plot details from “Hello Goodbye,” the Season 4 finale of “Slow Horses.” “Slow Horses” is not, as a rule, a sentimental show. Deceptively disheveled ...

Jack Lowden as River and Hugo Weaving as Frank in ‘Slow Horses’ CREDIT: Apple TV Following the ambush in the previous episode, River (Jack Lowden) is brought to a bar to meet Frank (Hugo Weaving).

In season 4 of "Slow Horses," actor Jack Lowden as River Cartwright wears this sleek coat. Jack English/Courtesy Of Apple Another season of “Slow Horses” has ended.