5. Death Sentence
(“Echo,” season 2 finale)

After a season of investigating who killed the Connors, the Jennings are shocked to find out it was the Connors’ own son, Jared (Owen Campbell) — but they’re equally shocked to find out the reason. Jared apparently knew what his parents were and wanted to join the KGB as a spy, but they said no, so he killed them. Philip and Elizabeth can’t believe the KGB would recruit children, but then they hear from their handler, Claudia (Margo Martindale), who tells them the KGB is interested in recruiting Paige.

Meanwhile, Stan comes extremely close to handing over an important piece of information to the Soviet Union, but he can’t go through with it and instead turns Nina in for treason against Russia, which sends her back to her home country and an almost certain death sentence.