viewers may find disturbing. head to the very eastern edge of ukraine and a ghostly vision of the country's fate unfolds before you. the city of kharkiv is being purged of life. in near total blackout, the police in the country's second largest city take us on patrol. the russians aren't far. explosion shelling happens every night. this close to the russian border, there's another threat here... ..saboteurs. no—one escapes scrutiny. alina, 76—years—old, is lost and confused. in an instant, everybody�*s life here has been upended.