One of Debailly's jailers is a Russian FSB mole and offers to help him. Meanwhile, Duflot tries to help Marina overcome her trauma. Shahanah takes Nadia to meet Lely, a female intermediary for IS. Sisteron and Kurdish fighter Esrin are ambushed by snipers and she is injured, and flown to France for treatment. Sisteron suggests to Duflot that Esrin should be recruited in exchange for help with her son's education. Marina, plagued by panic attacks, resigns from the DGSE. The FSB mole is seriously injured in combat.