As the reappearance of 4,400 missing persons on a single day confounds the global community, federal agents on the case slowly discover the ways in which the victims have been changed.
4400 people, assumed to be dead or missing over the past fifty years, reappear in a ball of light. None have any memory of where they've been, and some are manifesting paranormal abilities.
第 2 集 The New & Improved Carl Morrissey
播出时间:2004年7月19日
Tom and Diana investigate a 4400 who has used his ability of enhanced reflexes to become a vigilante.
第 3 集 Becoming
播出时间:2004年7月26日
Tom and Diana investigate Oliver Knox, a 4400 suspected of being a serial murderer.
第 4 集 Trial by Fire
播出时间:2004年8月2日
NTAC races against the clock to stop a group of fanatics targeting 4400s.
第 5 集 White Light
播出时间:2004年8月9日
Diana helps Tom break Kyle out of NTAC quarantine, eventually leading them to discover the truth behind the 4400.