The 4400

It's been one year since the 4400 returned. After a period of intense medical observation, Tom has returned to NTAC in a limited capacity, assigned only to desk duty. Diana finally finds a way to cut through the red tape and get Tom back.

It's been one year since the 4400 returned. After a period of intense medical observation, Tom has returned to NTAC in a limited capacity, assigned only to desk duty. Diana finally finds a way to cut through the red tape and get Tom back.

Gary Navarro, a minor league baseball player, finds that he is hearing everyone's unspoken thoughts. His new found ability quickly drives him to the edge of madness.

Tom and Diana investigate Trent Appelbaum, a 4400 whose saliva causes rapid acceleration of a person's metabolism.

A school teacher terrifies parents with her ability to inspire talents within students. Meanwhile, Richard and Lily are confronted by police, and Jordan warns Shawn not to overuse his healing gift.

Maia sees a vision of Jordan Collier's death. Kyle's frightening blackouts are disrupting Tom's personal life. Diana is asked to hand over Maia's diary to NTAC.

When Tom arrives at NTAC, he learns that no one has ever heard of the 4400. Tom and Diana track down a man to a museum, and during the chase, Tom finds a mysterious lab that only he can see.

Tom and Diana investigate a 4400 who has released a plague that has wiped out an entire town's population. Meanwhile, a Washington D.C. lobbyist joins the 4400 Center in order to add some political muscle to the movement.

Tom and Diana investigate Edwin Mayuya, a 4400 who has the ability is to heal damaged fetal chromosomes while in utero. Unfortunately, it turns out this man is responsible for the slaughter of an entire clinic.

NTAC follows a series of clues that lead them to Jordan Collier's killer. Tom faces a difficult choice when he must choose between the law or his family.

A 4400 launches a terrorist attack against NTAC that causes the males to revert to their primal instincts.

4400s across the world are coming down with strange and life threatening illnesses. Tom and Diana learn a horrible secret that the government may have directly caused the illnesses of the 4400s.

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.