In the world of Slow Horses, spying isn't just about spycraft. It is also about politics, power play, and rank.

But by the end of Slow Horses Season 4 Episode 1, the truth is revealed that River is alive and hiding out in France. His death was faked, though the reasons behind it remain unclear.

Lowden stars in the spy drama as River Cartwright, an MI5 rising star who’s banished to Slough House after a public training-exercise goes awry.

Jack Lowden told UPI that River Cartwright, the character he plays on the British espionage drama, "Slow Horses," may have taken a beating this season, but he remains determined to get his ...

As of the third episode, River Cartwright's exact connection to Frank Harkness remains unknown. Regardless of how accurate Slow Horses ' depiction of MI5 is, the spy thriller is full of exciting ...

Frank Asks River To Join Him As A Mercenary Since Slow Horses season 4, episode 1, the adaptation of Mick Herron's Spook Street has put River Cartwright through the wringer.

MI5's misfits and losers, known as the slow horses, are pulled into a case that involves their colleague River Cartwright and his grandfather, the former head of MI5.

In this exclusive clip from “Slow Horses” Season 3, River Cartwright (Jack Lowden) reluctantly confesses he may have seen his colleague’s kidnapper… and failed to intervene.

Jonathan Pryce has been a welcome presence throughout the first three seasons of Slow Horses, earning an Emmy nomination as Best Drama Guest Actor in 2024. His role as retired MI5 officer David ...