Air date: 2004-07-11

Runtime: 85 min

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.

Air date: 2004-07-18

Runtime: 42 min

Tom and Diana investigate a 4400 who has used his ability of enhanced reflexes to become a vigilante.

Air date: 2004-07-25

Runtime: 42 min

Tom and Diana investigate Oliver Knox, a 4400 suspected of being a serial murderer.

Air date: 2004-08-01

Runtime: 42 min

NTAC races against the clock to stop a group of fanatics targeting 4400s.

Air date: 2004-08-08

Runtime: 42 min

Diana helps Tom break Kyle out of NTAC quarantine, eventually leading them to discover the truth behind the 4400.