Because it uses HEVC in an MKV container, not all players work out of the box.
Best Line: “Get off my lawn.” (You’ll cry when you hear who says it.) Slow.Horses.S04E06.1080p.WEBRip.HEVC -CM-.mkv
The episode is anchored by what critics call the "Many Dads of River Cartwright". Telly Visions David Cartwright Because it uses HEVC in an MKV container,
The fourth season of concludes with Episode 6, " Hello Goodbye Slow.Horses.S04E06.1080p.WEBRip.HEVC -CM-.mkv
The sixth episode of season 4 picks up where the previous episode left off, with the team facing a new and daunting challenge. As they navigate the complex web of espionage, they must confront their own personal demons and work together to prevent a catastrophic outcome.