9. The Litvinov Ruse

Complete story — includes the ending

Carrie and Saul enlist the BND to help them prove Allison is working for the SVR. Saul plants a bug in Allison's handbag while she is asleep. The BND tell Allison a top Russian agent plans to defect to Germany, triggering Allison to go to a Russian safehouse to meet with Ivan while under BND drone surveillance. Allison and Ivan are arrested, but Allison insists to Dar Adal that Ivan was her asset and not vice versa. Quinn is held captive by the jihadists, who are planning a sarin gas attack on Berlin. He attempts to convince Qasim, a young and inexperienced member of the group, to prevent the attack. Quinn is brought to a gas chamber where his death is to be filmed as a demonstration; Qasim covertly injects him with atropine, an antidote, shortly before he is placed inside. The gas is released, and Quinn begins convulsing.