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.

• James Watkins
• Hossein Amini
• Misha Glenny

• David Strathairn
• David Dencik
• James Norton