Amanda Walker is in Centralia, a small town near Seattle in the grip of America's deadly Fentanyl epidemic. Rohit Kachroo meets the Russians in Turkey, who are searching for a new place to call home, far away from the threat of conscription into Putin's army. Julie Etchingham is in Germany, where archivists are painstakingly piecing together the fragments of history torn apart by the Communist Secret Police when the Berlin Wall began to fall.