They mysterious phenomenon that robbed many of their lives worldwide—the Reflection. Now, three years later, people had gathered at the memorial ceremony in New York, but some of the survivors from the Reflection appear and commit a terrorist attack.
with the term "Reflected" that you 
just used to describe them.
مع مُصطلح "المُنعكسين" الذي ذكرتَه للتو لوصفِهم
кроется в использованном
вами термине «Отраженные».