Apple TV Just Made Jack Lowden’s ‘Slow Horses’ Return That Much Harder
The sixth season finale of *Slow Horses* leaves River Cartwright’s fate uncertain after he collapses from a neurotoxin, making his return in Season 7 look doubtful. The cliffhanger matters because the series has killed other major characters this season, while the show’s source material suggests River’s apparent death may be a misdirection.
The toxin was left on a crowbar by assassins Jim and Jane during an earlier break-in at David Cartwright’s home. In Mick Herron’s *Slough House*, River is poisoned with Novichok, hospitalised and eventually recovers; the article says this points to his survival, though he may be absent from much of Season 7. That could give more attention to agents including Shirley Dander and Roddy Ho, while Louisa Guy may also return full-time.
In short
- River collapses after touching a poisoned crowbar.
- The books indicate he survives Novichok poisoning.
- He may have a limited role in Season 7.
Explained simply
Slow Horses follows British intelligence officers who have been sidelined from important work and assigned to Slough House, a grim office led by Jackson Lamb. River Cartwright, played by Jack Lowden, is one of its agents and the grandson of a senior former intelligence officer.
The series is based on Mick Herron’s novels, which provide some background to the characters’ later stories. In the books, River is poisoned with Novichok, a nerve agent, but survives after hospital treatment; the television story may differ, so his fate remains uncertain. Other Slough House agents, including Shirley Dander, Roddy Ho and Louisa Guy, are also part of the team.