In London, Kurtz's team prepare for the next stage of the operation as Charlie waits and wonders if Michel's people will make contact. Becker finds Charlie in a state of tortured limbo and teaches her to shoot a pistol, as Michel would have done. He tells Charlie about Michel's older brother Khalil, explaining that Michel only tells a trusted few about his elusive brother and leader amongst their people. When Charlie returns from a performance with her theatre troupe, she finds a note left by Michel's team, making contact. Michel's Swiss lawyer, Anton Mesterbein arrives and demands Charlie come with him to a remote cottage, where she is greeted by Helga, an unhinged radical. Helga and Mesterbein interrogate Charlie to test whether she and her affair with Michel are genuine. Charlie's performance must now hold up under intense pressure. When Helga reveals to Charlie that Michel has been found dead, Charlie almost falters but manages to mask her horror that she is now complicit in a murder. She inwardly fumes that Becker has kept this from her. Charlie's knowledge of Khalil helps her convince Helga that her relationship with Michel was real. As Charlie descends deeper into the rabbit hole, she feels torn about the choice she's being asked to make, and the human cost of Kurtz's operation. Kurtz tries to convince Charlie that her commitment is for the greater good and she is the lynchpin that can take them to the targets they have been hunting for years. Charlie's decision to cross the point of no return will ultimately depend on Becker's ability to persuade her, but her choice is complicated when she and Becker finally succumb to the attraction they feel for one another. Will Charlie part with Becker to join Michel's people as a spy, or stop short before it is too late?