‘Slow Horses’ Team Talks [Spoiler]’s Death: ‘You Couldn’t Be More Slow Horses Than That’

[Warning: The below contains Major spoilers for Slow Horses Season 5 Episode 4, “Missiles.”] “We were all rubbing our hands at that,” executive producer Will Smith tells TV Insider of the death from Mick Herron’s book on which Slow Horses Season 5 is based (London Rules) that plays out onscreen in Episode 5. By this point, they’re all in agreement that the antagonists are using MI5’s own destabilization strategy in their plans, and next: assassinate a populous leader. That brings the action directly to the mayoral campaigns of Jaffrey (Nick Mohammed) and Gimball (Christopher Villiers). While River (Jack Lowden) and Coe (Tom Brooke) head to an event at which Gimball is speaking, Shirley (Aimee-Ffion Edwards) and Standish ( Saskia Reeves) stake out Jaffrey’s.