63 minutes
info
| Person | Character |
|---|---|
| Jared Harris | Valery Legasov |
| Stellan Skarsgård | Boris Shcherbina |
| Emily Watson | Ulana Khomyuk |
| Paul Ritter | Anatoly Dyatlov |
| Jessie Buckley | Lyudmilla Ignatenko |
| Adam Nagaitis | Vasily Ignatenko |
| Robert Emms | Leonid Toptunov |
| Sam Troughton | Alexandr Akimov |
| David Dencik | Mikhail Gorbachev |
| Alex Ferns | Glukhov |
| Mark Lewis Jones | General Pikalov |
| Ralph Ineson | General Tarakanov |
| Alan Williams | KGB Chairman Charkov |
| Barry Keoghan | Pavel |
| Person | Position |
|---|---|
| Johan Renck | Director, Co-Executive Producer |
| Craig Mazin | Writer, Creator, Executive Producer |