
NOVA group members that were in the custody of NTAC escape from jail with outside help from Jordan Collier. Diana tells April about her relationship with Ben. Shawn and Richard learn that Isabelle is working with Dennis Ryland.
NTAC and the 4400 Center work together to find Jordan Collier. Kyle Baldwin gets a surprising visitor at the state prison.
Tom and Diana’s investigation into a series of gruesome murders leads them to uncover another conspiracy within the government. At the 4400 Center, Shawn receives a gift from another returnee that allows him to see his ...
Kevin is on the run after horribly mutating due to the promicin experiments. Tom and Diana go to Tess for help. Diana gets what she believes is the flu and discovers something startling.
Tom and Diana are drugged with a hallucinogen, that was created from oil that was secreted from the hands of a 4400.
With the help of Dennis Ryland, NTAC track down the remining members of the NOVA group. Nikki pays Shawn a visit.
Isabelle seeks revenge on the Nova Group after they attack Shawn. Alana confronts the man responsible for killing her husband and son in a car accident nine years ago.
Tom and Diana continue to investigate the disappearance of the 4400 children. Isabelle and Shawn’s relationship becomes public.
Someone is targeting young 4400’s and Maia gets kidnapped. A mistake from Shawn’s past comes back to haunt him. Richard is given a position of authority at the 4400 Center.
Tom is accused of murdering TJ Kim. 17 year old Boyd Gelder has the ability to change his appearance whenever he chooses. Meanwhile, Shawn and Isabelle grow closer.
Gary Navarro is arrested for the second attempt to assassinate Dennis Ryland. Knowing she is the key to her mother’s survival, Isabelle attempts to kill herself by jumping off the 4400 center building only to survive ...
Ryland and other government officials are on trial for withholding vital information that they discovered about the returnees when a disturbing sound is heard the courtroom. Tom and Diana, with the help of Gary Navarro, try ...
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.
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 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.
NTAC is keen to find Jordan Collier’s killer as Tom is desperate to find Kyle.
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.
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 ...
Tom finds himself in a world where the 4400 never happened.
A morbid premonition from Maia threatens the future of the 4400 Center.
Tom and Diana investigate a 4400 junior high school teacher accused of child abuse.
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.
A returnee exhibiting telepathic abilities seeks help from NTAC, but is instead used as a mole to infiltrate Jordan Collier’s 4400 Center.
Richard must protect his family when he and Lily are discovered to be 4400s.