Valery Legasov (Jared Harris), Boris Shcherbina (Stellan Skarsgård) and Ulana Khomyuk (Emily Watson) risk their lives and reputations to expose the truth about Chernobyl. #HBO #ChernobylHBO #Chernobylbr br Jared Harris, Stellan Skarsgård and Emily Watson star in Chernobyl - the story about the 1986 nuclear catastrophe, and the sacrifices made to save Europe from unimaginable disaster.br br Watch Chernobyl Mondays at 9 PM starting May 6. Only on HBO.