- Jared Harris (Valery Legasov)
- Stellan Skarsgård (Boris Shcherbina)
- Emily Watson (Ulana Khomyuk)
- Paul Ritter (Anatoly Dyatlov)
- Jessie Buckley (Lyudmilla Ignatenko)
- Adam Nagaitis (Vasily Ignatenko)
- Sam Troughton (Alexandr Akimov)
- Robert Emms (Leonid Toptunov)
- Con O'Neill (Viktor Bryukhanov)
- Adrian Rawlins (Nikolai Fomin)
- Alan Williams (KGB Chairman Charkov)
- David Dencik (Mikhail Gorbachev)
- Mark Lewis Jones (General Pikalov)
- Ralph Ineson (General Tarakanov)
- Barry Keoghan (Pavel)
- Alex Ferns (Glukhov)
- Fares Fares (Bacho)
- Michael McElhatton (Prosecutor Andrei Stepashin)
Chernobyl — S1E4
Episode: The Happiness of All Mankind
Air Date: 2019-05-27
Runtime: 67 min
Overview
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.