Seasons
Servers
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Season 1 Jul. 11, 2004
Season 2 Jun. 05, 2005
- Episode 1: Wake Up Call (1)
- Episode 2: Wake Up Call (2)
- Episode 3: Voices Carry
- Episode 4: Weight of the World
- Episode 5: Suffer the Children
- Episode 6: As Fate Would Have It
- Episode 7: Life Interrupted
- Episode 8: Carrier
- Episode 9: Rebirth
- Episode 10: Hidden
- Episode 11: Lockdown
- Episode 12: The Fifth Page
- Episode 13: Mommy's Bosses
Season 3 Jun. 11, 2006
- Episode 1: The New World (1)
- Episode 2: The New World (2)
- Episode 3: Being Tom Baldwin
- Episode 4: Gone (1)
- Episode 5: Gone (2)
- Episode 6: Graduation Day
- Episode 7: The Home Front
- Episode 8: Blink
- Episode 9: The Ballad of Kevin and Tess
- Episode 10: The Starzl Mutation
- Episode 11: The Gospel According to Collier
- Episode 12: Terrible Swift Sword
- Episode 13: Fifty–Fifty
Season 4 Jun. 17, 2007
- Episode 1: The Wrath of Graham
- Episode 2: Fear Itself
- Episode 3: Audrey Parker's Come and Gone
- Episode 4: The Truth and Nothing But the Truth
- Episode 5: Try The Pie
- Episode 6: The Marked
- Episode 7: Till We Have Built Jerusalem
- Episode 8: No Exit
- Episode 9: Daddy's Little Girl
- Episode 10: One of Us
- Episode 11: Ghost in the Machine
- Episode 12: Tiny Machines
- Episode 13: The Great Leap Forward
The 4400 Season 2 Episode 10
NTAC is keen to find Jordan Collier’s killer as Tom is desperate to find Kyle.