E1 - Wake Up Call (1)

Aired: June 05, 2005

Tom and Diana investigate a mysterious structure being built at a psychiatric hospital, based on the drawings of one of their patients who's a 4400.

E2 - Wake Up Call (2)

Aired: June 05, 2005

Richard must protect his family when he and Lily are discovered to be 4400s.

E3 - Voices Carry

Aired: June 12, 2005

A returnee exhibiting telepathic abilities seeks help from NTAC, but is instead used as a mole to infiltrate Jordan Collier's 4400 Center.

E4 - Weight of the World

Aired: June 19, 2005

Tom and Diana investigate a 4400 whose ability to increase the human bodies' metabolism just may be this weight-conscious world's answer to the ultimate fat-burner.

E5 - Suffer the Children

Aired: June 26, 2005

Tom and Diana investigate a 4400 junior high school teacher accused of child abuse.

E6 - As Fate Would Have It

Aired: July 10, 2005

A morbid premonition from Maia threatens the future of the 4400 Center.

E7 - Life Interrupted

Aired: July 17, 2005

Tom finds himself in a world where the 4400 never happened.

E8 - Carrier

Aired: July 24, 2005

After living for 8 years in an alternate world that only Tom and Alana remember the world with the 4400 has returned as it was at the second the 8 years started. A 30 year old 4400 woman wakes up and finds everybody else in her local community dead. Maia puts April's love for her to a test.

E9 - Rebirth

Aired: July 31, 2005

A 4400 with the ability to repair damaged chromosomes hides a shocking past. And while Richard seeks out a tormentor among his Korean War buddies, Shawn reconnects with his family and tries to help Kyle.

E10 - Hidden

Aired: August 07, 2005

NTAC is keen to find Jordan Collier's killer as Tom is desperate to find Kyle.

E11 - Lockdown

Aired: August 14, 2005

A 4400 terrorist releases a signal at NTAC that makes the men violent, forcing a lockdown of the facility. Lilly questions how the Centre is handling her daughter, and Shawn tries to recruit a familiar face.

E12 - The Fifth Page

Aired: August 21, 2005

When 4400s around the world come down with life-threatening illnesses, Ryland comes back to NTAC and orders the sick - and even unaffected 4400s - to be quarantined. Tom and Diana race to find a cure and discover a shocking secret in the process.

E13 - Mommy's Bosses

Aired: August 28, 2005

Discovering that NTAC is behind the disease plaguing the 4400s, Tom and Diana try to get to the bottom of NTAC's cover-up, while Kyle considers turning himself in.