Apple TV+ has unveiled the trailer for Slow Horses season 5, starring Sir Gary Oldman.

Adapted from London Rules, the next novel in the CWA Gold Dagger Award-winning Mick Herron Slough House book series, the six-episode fifth season premieres September 24, 2025 with the first episode, followed by one episode weekly until October 29, 2025.

What is Slow Horses season 5 about?

Everyone is suspicious when resident tech nerd Roddy Ho has a glamorous new girlfriend, but when a series of increasingly bizarre events occur across the city, it falls to the Slow Horses to work out how everything is connected. After all, Jackson Lamb (Oldman) knows that in the world of espionage, the London Rules — cover your back — always apply.

The cast includes Kristin Scott Thomas, Jack Lowden, Saskia Reeves, Rosalind Eleazar, Christopher Chung, Aimee-Ffion Edwards, Ruth Bradley, James Callis, Tom Brooke and Jonathan Pryce. Season five will also welcome Ted Lasso star Nick Mohammed as a special guest star.

Here’s the trailer: