Slow Horses finale leaves River’s fate unresolved

The Season 6 finale of Slow Horses ends with River Cartwright collapsing after he appears to be poisoned, leaving his fate unresolved on screen as the series heads toward its confirmed seventh season. In the closing scene, River, played by Jack Lowden, returns to his grandfather’s house and finds Sid Baker, played by Olivia Cooke, there. While preparing a drink, he handles a metal object that appears to be poisoned, notices something is wrong and collapses, gasping for breath. The episode ends without showing whether he survives or what happens next. The novels offer one possible direction, but do not confirm how the television series will handle the cliffhanger. In Mick Herron’s Bad Actors, River survives a nerve-agent poisoning and has lasting effects, including vision problems and fatigue, before taking medical leave. That book-based account is not confirmation of the character’s outcome in the adaptation. Season 7 is set to adapt Bad Actors. Its premiere date has not been announced, and the full returning cast has not been confirmed. Five actors have been reported as joining the next season: Varada Sethu, Ethan Moorhouse, Tuppence Middleton, Merab Ninidze and Joshua...