A retrospective in the show in an NBC special. Narrated by Jacqueline McKenzie, "The 4400: Unlocking the Secrets" summarises the events of seasons one and two.
| Creator | René Echevarria |
|---|---|
| Actor | Jacqueline McKenzie, Joel Gretsch, Patrick John Flueger |
| Country | United States of America |
| Production | Viacom Productions |
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