6 episodes · first aired 2022-04-01
| Still | # | Title | Overview | Air date | Rating |
|---|---|---|---|---|---|
 | 01 | Failure's Contagious 2022-04-01 | River Cartwright is ousted from MI5 and finds himself in a place worse than purgatory: Slough House, dumping ground for failed spies. | 2022-04-01 | 7.4 |
 | 02 | Work Drinks 2022-04-01 | River and Sid join forces. A misfired gun has dire consequences. | 2022-04-01 |
Ratings shown are community scores. Once OMDB is wired, these become per-episode IMDB values.
 | 03 | Bad Tradecraft 2022-04-08 | Slough House is the unlikely venue for a secret romance, but events take a dark turn when a dangerous encounter becomes deadly. | 2022-04-08 | 7.8 |
 | 04 | Visiting Hours 2022-04-15 | Taverner sends the Dogs to hunt down Lamb and the Slow Horses. River holds the secret to saving the gang. | 2022-04-15 | 7.6 |
 | 05 | Fiasco 2022-04-22 | The Slow Horses must disappear to avoid capture by MI5. Lamb and River head to The Park to outwit Taverner. | 2022-04-22 | 8.0 |
 | 06 | Follies 2022-04-29 | Taverner and the Slow Horses attempt different approaches to locate the kidnappers and Hassan. Ho makes a shocking discovery about Sid. | 2022-04-29 | 7.9 |
