Returnee is an informal term referring to people who were victims of abduction and later returned to their place (or time) of origin. The term is primarily applied to the 4,400 human beings who were abducted at different points in time and returned to the base of Mount Rainier in the 2004-07 television series The 4400.
It was eventually revealed that these returnees, dubbed the 4400, were destined to take part in some monumental future event as the instruments of a destructive war between two rival factions.