Chernobyl Episode 4 Cast Pavel, It was written by Craig Mazin and directed by Johan Renck. While the "Liquidators" must kill all the dogs and cats in the exclusion zone, Legasov wonders how to remove the highly irradiated graphite from the reactor's roof. The episode first aired on May 27, 2019 on the US pay TV channel HBO. Valery Legasov and Soviet Deputy Prime Minister Boris Shcherbina consider using lunar rovers to remove radioactive debris, while Ulana Khomyuk faces government hurdles in determining the truth about the cause of the explosion. The Happiness of All Mankind: Directed by Johan Renck. Discover the cast and crew of Chernobyl: Miniseries, Episode 4 on Rotten Tomatoes. With June Watson, Josef Altin, Jessie Buckley, Sergejus Ivanovas. Explore now! Where to watch Chernobyl - Season 1 • Episode 4 - The Happiness of All Mankind starring Jared Harris, Stellan Skarsgård, Emily Watson and directed by Johan Renck. Episode summary, trailer and screencaps; guest stars and main cast list; and more. "Episode 4" (originally: "The Happiness of All Mankind") is the fourth episode of Chernobyl. qj021, w4, wddpi4, e3ndt, w39tkxs, 72, rjfnz, fknlsh, tmw, xlxws,