Alex fears his family are under threat when Vadim learns the truth about him. His fears appear to be founded when he discovers evidence of a surveillance operation against him - but his paranoid reaction drives a wedge between him and Rebecca, while an unexpected betrayal has devastating consequences. Masha receives an ultimatum, and Joseph seeks an ally in his bid to help Lyudmilla.
Elenco: James Norton , David Strathairn , Juliet Rylance , Merab Ninidze , Aleksey Serebryakov , Mariya Shukshina , Faye Marsay , David Dencik , Oshri Cohen .