SERIESMOVIESNEW & LAST CHANCESCHEDULEFREE EPISODESMoreDocumentariesSpecialsSportsPodcastsHBO MAXSIGN INGET HBOMAXSERIESMOVIESNEW & LAST CHANCESCHEDULEFREE EPISODESMoreDocumentariesSpecialsSportsPodcastsHBO MAXSIGN INGET HBOMAXSIGN INStream all of HBO plus more TV, movies, and Max Originals at no additional cost.SIGN INHBO Max Chernobyl About Season Season 1Valery Legasov Played by Jared Harris Legasov is a leading Soviet nuclear physicist part of the Chernobyl response team. He is among the first to grasp the scope of the unparalleled disaster that has occurred.