Chernobyl Episode 4 Cast Pavel, 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. "Episode 4" (originally: "The Happiness of All Mankind") is the fourth episode of Chernobyl. It was written by Craig Mazin and directed by Johan Renck. 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. 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. Valery and Boris attempt to find solutions to removing the radioactive debris; Ulana attempts to find out the cause of the explosion. Episode summary, trailer and screencaps; guest stars and main cast list; and more. Discover the cast and crew of Chernobyl: Miniseries, Episode 4 on Rotten Tomatoes. The episode first aired on May 27, 2019 on the US pay TV channel HBO. . zt2v, bzcmt, apum5fdf, azcn, ju4m, nips6um, o49t, 8l, dlsn, o82ry19q,