Loved the characters in the first Series but the story was ruined by incredibly annoying bad guys and an incompetent hostage. Series 2 was a step up, which was genuinely terrifying thanks to the unstoppable Russian, but it's series 3 that brings everything to a satisfying conclusion with four semi-regular a-holes removed from the chessboard. I was at the edge of my seat wondering if any of the slow horses would survive this time around. River gets his head handed to him from start to finish and is the antithesis of the typical hero. I adore the current roster (never liked Min), particularly the scrappy cocaine user. Series 3 is the best season of any show I've watched in awhile and I was terrified of what would happen in the last two episodes. Unlike any movie I've watched in the last 5 years, there was a real palpable tension and danger at the end, considering the track record of the team. I hope series 4 is better or as good!
Review of Slow Horses
