Casualties of War

Thomas contacts President Martinez to offer an ultimatum. Thomas will provide an antidote for the passengers of Avias 514, who are slowly dying from a mysterious illness. In exchange, though, President Martinez must release the Inostranka detainees. Sophia and Agent Lee try to convince Thomas to back down on his demands, when they learn that President will execute the detainees if the passengers of Avias 514 die. Meanwhile, Sean is able to contact Leila, but she discovers the police are involved in her kidnapping and fails to escape. When Sean arrives and discovers Vicky is inside the station, he threatens to expose the young boy she has been harboring from a previous mission against the orders of her superiors. Vicky then helps Sean escape with Leila. The episode closes with Martinez agreeing to trade Sophia for the antidote.