With untold millions at risk, Ulana makes a desperate attempt to reach Valery and warn him about the threat of a second explosion.

Cast: Jared Harris, Stellan Skarsgård, Jessie Buckley, Daniel Crossley, Karl Davies, Cait Davis, David Dencik, Robert Emms, Oscar Dyekjær Giese, Aiste Gramantaite, Peter Guinness, Barry Keoghan, James Kermack, Diarmaid Murtagh, Adam Nagaitis