4400 centers on the return of 4400 people who, previously presumed dead or reported missing, reappear on Earth. Though they have not aged physically, some of them seem to have deeper alterations ranging from superhuman strength to an unexplained healing touch. A government agency is formed to track the 4400 people after one of them commits a murder.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Return | 2004-07-11 | 120 min |
| Season 1 | Episode 2 | The New & Improved Carl Morrissey | 2004-07-18 | 60 min |
| Season 1 | Episode 3 | Becoming | 2004-07-25 | 60 min |
| Season 1 | Episode 4 | Trial by Fire | 2004-08-01 | 60 min |
| Season 1 | Episode 5 | White Light | 2004-08-08 | 60 min |
| Season 2 | Episode 1 | Wake-Up Call: Part 1 | 2005-06-05 | 60 min |
| Season 2 | Episode 2 | Wake-Up Call: Part 2 | 2005-06-05 | 60 min |
| Season 2 | Episode 3 | Voices Carry | 2005-06-12 | 60 min |
| Season 2 | Episode 4 | Weight of the World | 2005-06-19 | 60 min |
| Season 2 | Episode 5 | Suffer the Children | 2005-06-26 | 60 min |
| Season 2 | Episode 6 | As Fate Would Have It | 2005-07-10 | 60 min |
| Season 2 | Episode 7 | Life Interrupted | 2005-07-17 | 60 min |
| Season 2 | Episode 8 | Carrier | 2005-07-24 | 60 min |
| Season 2 | Episode 9 | Rebirth | 2005-07-31 | 60 min |
| Season 2 | Episode 10 | Hidden | 2005-08-07 | 60 min |
| Season 2 | Episode 11 | Lockdown | 2005-08-14 | 60 min |
| Season 2 | Episode 12 | The Fifth Page | 2005-08-21 | 60 min |
| Season 2 | Episode 13 | Mommy's Bosses | 2005-08-28 | 60 min |
| Season 3 | Episode 1 | The New World: Part 1 | 2006-06-11 | 60 min |
| Season 3 | Episode 2 | The New World: Part 2 | 2006-06-11 | 60 min |
| Season 3 | Episode 3 | Being Tom Baldwin | 2006-06-18 | 60 min |
| Season 3 | Episode 4 | Gone: Part I | 2006-06-25 | 60 min |
| Season 3 | Episode 5 | Gone: Part II | 2006-07-02 | 60 min |
| Season 3 | Episode 6 | Graduation Day | 2006-07-09 | 60 min |
| Season 3 | Episode 7 | The Home Front | 2006-07-16 | 60 min |
| Season 3 | Episode 8 | Blink | 2006-07-23 | 60 min |
| Season 3 | Episode 9 | The Ballad of Kevin & Tess | 2006-07-30 | 60 min |
| Season 3 | Episode 10 | The Starzl Mutation | 2006-08-06 | 60 min |
| Season 3 | Episode 11 | The Gospel According to Collier | 2006-08-13 | 60 min |
| Season 3 | Episode 12 | Terrible Swift Sword | 2006-08-20 | 60 min |
| Season 3 | Episode 13 | Fifty-Fifty | 2006-08-27 | 60 min |
| Season 4 | Episode 1 | The Wrath of Graham | 2007-06-17 | 60 min |
| Season 4 | Episode 2 | Fear Itself | 2007-06-24 | 60 min |
| Season 4 | Episode 3 | Audrey Parker's Come and Gone | 2007-07-01 | 60 min |
| Season 4 | Episode 4 | The Truth and Nothing But the Truth | 2007-07-08 | 60 min |
| Season 4 | Episode 5 | Try the Pie | 2007-07-15 | 60 min |
| Season 4 | Episode 6 | The Marked | 2007-07-22 | 60 min |
| Season 4 | Episode 7 | Till We Have Built Jerusalem | 2007-07-29 | 60 min |
| Season 4 | Episode 8 | No Exit | 2007-08-05 | 60 min |
| Season 4 | Episode 9 | Daddy's Little Girl | 2007-08-12 | 60 min |
| Season 4 | Episode 10 | One of Us | 2007-08-19 | 60 min |
| Season 4 | Episode 11 | Ghost in the Machine | 2007-08-26 | 60 min |
| Season 4 | Episode 12 | Tiny Machines | 2007-09-09 | 60 min |
| Season 4 | Episode 13 | The Great Leap Forward | 2007-09-16 | 60 min |
| Camera | Michael Wrinch | Camera Operator |
| Production | Irene Cagen | Casting |
| Art | Louise Roper | Set Decoration |
| Art | Tasha Moth | Set Decoration |
| Production | Craig Sweeny | Supervising Producer |
| Production | Craig Matheson | Production Manager |
| Visual Effects | Philip Edward Jones | Special Effects Supervisor |
| Production | Michelle Almaz Tadege | Production Coordinator |
| Costume & Make-Up | Rita Ciccozzi | Makeup Artist |
| Art | Ian D. Thomas | Production Design |
| Production | Kymn Brettoner | Production Accountant |
| Production | Scott Peters | Executive Producer |
| Production | Clark Candy | Production Coordinator |
| Sound | Ken Cade | Sound Designer |
| Visual Effects | Roberto Biagi | Visual Effects Supervisor |
| Art | Clare Davis | Construction Coordinator |
| Costume & Make-Up | Trish Flynn | Costume Design |
| Production | Corinne Clark | Casting |
| Production | Kathy Gilroy | Producer |
| Production | Jennifer Page | Casting |
| Production | Ben Brafman | Associate Producer |
| Art | D.A. Menchions | Art Direction |
| Production | Maira Suro | Executive Producer |
| Production | Ira Steven Behr | Executive Producer |
| Costume & Make-Up | Janet MacDonald | Hairstylist |
