Tom Brooke’s portrayal of JK Coe in ‘Slow Horses‘ ended abruptly in Season 6, Episode 4, with the character’s death in a bathroom knife fight, a moment that left fans and cast stunned, despite its roots in Mick Herron’s novels.
The Death of JK Coe and Its Literary Roots
The death of JK Coe in Slow Horses Season 6, Episode 4, Lost and Found,
was a pivotal moment for the series, echoing Mick Herron’s Joe Country novel, where Coe dies after a confrontation with assassin Jim (Kyle Soller). However, the show’s adaptation diverged from the book’s ending, with the setting being different and Coe killing his opponent in the book, while assassin Jim survives in the series. The episode’s climax saw Coe fatally stabbed in a motorway service center bathroom, a scene that Brooke had long advocated for its inclusion, noting it was the first thing he talked about with the showrunner. As long as we’re heading to that and we get to do that, this is great,
he said.
Actor Tom Brooke’s Mixed Reaction
Brooke, who was introduced as Coe in season four of Slow Horses, which aired in 2024, admitted he was not alright about it
after learning of Coe’s fate. In an interview, he revealed his reaction to the realization. I cannot engage with this world again because I’m not part of it,
he said. Despite his personal attachment, Brooke praised the show’s decision to honor the source material, calling it such a good death scene in the book.
The death also resonated with viewers, with Coe’s murder in a bathroom knife fight feeling shocking. Christopher Chung, who plays Roddy, noted that any time a cast mate leaves the show, it is devastating because everyone becomes part of Slow Horses.
The Episode’s Broader Implications
Coe’s death intensified the stakes for Slow Horses’ remaining agents, particularly Sid Baker (Olivia Cooke), who was abducted by Russian assassins. Head writer Gaby Chiappe explained why his final scene was meant to matter, stating she hoped viewers would feel the loss rather than simply move on to the next plot point, noting, I hope that death will count for people. I think it will.
The setting—a motorway service center bathroom—was part of the confrontation where Coe chats up Russian assassin Jim.
The episode also deepened the mystery surrounding the assassins, with Jim and Jane going after the Slow Horses. Diana Taverner was dealing with significant fallout at the Park over her disastrous TV interview.
What Comes Next for ‘Slow Horses’?
With Coe dead and Sid captured, the focus shifts to Sid’s survival and the lingering threat. A review of Episode 4, Lost and Found,
called the episode ill-paced. The next episode, “Sayonara,” arrives Wednesday, October 14, 2026, on Apple TV, and will carry the story toward the season’s final two episodes.