Having put aside their differences, Sandy and Jeanne move full steam ahead with their mole hunt. The investigation experiences a serious setback, though, when Sandy learns that General Polyakov has been compromised.

Cast: Jodie Whittaker, Paul Rhys, Harriet Walter, Ralph Brown, Stuart Milligan, Amelia Clarkson, Catalina Denis, Peter Guinness, Goran Kostic, Nicholas Woodeson, Leonardas Pobedonoscevas, Adam James, Rokas Petrauskas, Alina Pukova, Aaliyah Brown