Pilot S1, Ep1 Jul. 11, 2004 Pilot An unusual comet leaves behind 4,400 people who have disappeared over the last fifty years. While authorities are investigating, some of the 4,400 are behaving strangely.
The New and Improved Carl Morrissey S1, Ep3 Jul. 18, 2004 The New and Improved Carl Morrissey Another one of The 4400 begins to show strange behavior. Carl Morrissey suddenly shows immense strength and the urge to remove criminals from Bradley Park to bring it back to its old state.
Becoming S1, Ep4 Jul. 25, 2004 Becoming Baldwin and Skouris deal with returnee Oliver Knox, involved in a series of murders. Jordan Collier, hotel magnate, puts himself in front as 4400 spokesman.
Trial by Fire S1, Ep5 Aug. 1, 2004 Trial by Fire Someone has leaked a list of the current locations of all 4400's. When several of the returnees are bombed, Baldwin and Skouris must find out who did it.
White Light S1, Ep6 Aug. 8, 2004 White Light Baldwin's son Kyle has been kidnapped by agent Lytell for interrogation. Just when Tom and Diana are making plans to take him back, Maia has a premonition about Kyle being the answer to everything.
Wake-Up Call S2, Ep1 Jun. 5, 2005 Wake-Up Call Kyle tries to visit his cousin Shawn at The 4400 Center but is thrown out. Richard and Lily are desperate to protect their infant daughter, Isabelle from Collier and other maniacs, and a schizophrenic 4400 wants a huge communicative device and makes it a hospital's project from a minor position.
Voices Carry S2, Ep2 Jun. 12, 2005 Voices Carry A baseball player is overwhelmed by a special 4400 ability. Collier is involved with a weapons' dealer. To Maia's delight Diana's sister visits them. Richard and Lily seek shelter at a motel where Isabelle takes some surprising initiatives.
Weight of the World S2, Ep3 Jun. 19, 2005 Weight of the World A salesman's saliva has an extremely slimming effect on people. Lily suspects a new pregnancy as Richard stumbles onto a case of jealousy. So does Collier, and Shawn is disgusted by his moral. Kyle is tempted to join a wild students' party. Maia finds her aunt's work very interesting.
Suffer the Children S2, Ep4 Jun. 26, 2005 Suffer the Children Some schoolchildren get startling abilities and some parents suspect child abuse by a 4400 who is their teacher. Jordan Collier changes attitude, especially towards Isabelle and her parents. Shawn is fascinated by a young homeless girl.
As Fate Would Have It S2, Ep5 Jul. 10, 2005 As Fate Would Have It Maia has a vision that frightens her and causes the NTAC serious concerns. Heidi visits her mother which makes Isabelle cry in despair. Collier sees Isabelle to get some crucial advice.
Life Interrupted S2, Ep6 Jul. 17, 2005 Life Interrupted Tom Baldwin wakes up in a parallel or alternate world where he has married a woman two years ago but he has never seen her before. There is no trace of any 4400s from the future with special skills, and Jordan Collier is Governor.
Carrier S2, Ep7 Jul. 24, 2005 Carrier 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.
Rebirth S2, Ep8 Jul. 31, 2005 Rebirth A male 4400 originally from Rwanda repairs bad chromosomes of unborn. Kyle is utterly despaired as he suddenly remembers what he did during his blackout. Rishard attends a co-veteran's funeral. Diana takes s hard family decision.
Hidden S2, Ep9 Aug. 7, 2005 Hidden NTAC is keen to find Jordan Collier's killer as Tom is desperate to find Kyle.
Lockdown S2, Ep10 Aug. 14, 2005 Lockdown On John Colliers'ø birthday NTAC receives threatening e-mails and gets attacked by terror. Kyle is concerned that an innocent will be convicted for killing Collier. Maia gets a mysterious infection and is treated at NTAC. Isabelle has broken off her special communication with her mother and transfers it to her father. At school a girl is very interested in Kyle.
The Fifth Page S2, Ep11 Aug. 21, 2005 The Fifth Page The authorities led by Dennis Hyland wants to quarantine every 4400, as several of them are sick with the same as Maia. Hunted by bad conscience Kyle somehow contacts Marsden's girlfriend.
Mommy's Bosses S2, Ep12 Aug. 28, 2005 Mommy's Bosses 7 of the 4400 have died and Maia gets worse all the time Out of suspicion and despair Diana threatens Dr. Hudson with a gun. Lily has run away with Isabelle and Richard pleads he to come back. Marsdem seems unable to avoid a long prison term which makes Alison contact Kyle.
Unlocking the Secrets S3, Ep0 Jun. 3, 2006 Unlocking the Secrets Clip Show
The New World S3, Ep1 Jun. 11, 2006 The New World In a broadcast, the Nova Group promises the world a demonstration of their power on October 19. Tom and Diana apprehend Gary, but he refuses to give any information about October 19. Meanwhile, it's learned that Shawn has been funding the Nova Group for months, unaware of their murderous intent. Meanwhile, Shawn helps Isabelle deal with the guilt of her mother's impending death. Lily dies peacefully.
Being Tom Baldwin S3, Ep2 Jun. 18, 2006 Being Tom Baldwin Tom Baldwin shoots T.J. in the head during interrogation….or did he?
Gone: Part 1 S3, Ep3 Jun. 25, 2006 Gone: Part 1 Tom and Diana must hunt down a kidnapper who targets 4400 children. Maia's sister, Sarah appears.
Gone: Part 2 S3, Ep4 Jul. 2, 2006 Gone: Part 2 Tom and Diana track down the 4400 children kidnapper.
Graduation Day S3, Ep5 Jul. 9, 2006 Graduation Day Daniel Armand of The Nova Group launches an attack against Shawn causing mental illness. Isabelle seeks retribution. Alana tracks down a drunk driver responsible for the death of her husband and child.
The Home Front S3, Ep6 Jul. 16, 2006 The Home Front Tom and Diana pursue the last member of the Nova Group, Gary Navarro but are foiled when he receives a tip off to escape capture. Alana is detained to explore suspected links to Nova Group.
Blink S3, Ep7 Jul. 23, 2006 Blink Tom and Diana are drugged by a 4400 and are forced to face some unresolved issues from their past. Isabelle decides that Shawn should marry her.
The Ballad of Kevin and Tess S3, Ep8 Jul. 30, 2006 The Ballad of Kevin and Tess Dr. Burkhoff continues his experiments on himself and forces them on another person and Maia has a nightmare where Diana looks like a monster. A rock star tries to involve Shawn in his health that demands almost all of his time.
The Starzl Mutation S3, Ep9 Aug. 6, 2006 The Starzl Mutation A serial killer aims at people with a certain chromosome and Shawn gets a 4400 wedding cigar.
The Gospel According to Collier S3, Ep10 Aug. 13, 2006 The Gospel According to Collier Just as he's about to be wedded to Isabelle Shawn has seen Jordan Collier very alive and helps NTAC to search for him. April presents her new boyfriend to Diana, but soon after Maia tells Diana about a family enlargement.
Terrible Swift Sword S3, Ep11 Aug. 20, 2006 Terrible Swift Sword The Nova Group escapes from prison, so Hyland decides to develop his troops at the fastest and most ruthless possible.
Fifty-Fifty S3, Ep12 Aug. 27, 2006 Fifty-Fifty Jordan Collier's strategy is spread out 4400-abilities to everybody who wants them, and Devon is eager to be the first to try.
The Wrath of Graham S4, Ep1 Jun. 17, 2007 The Wrath of Graham A high school kid named Graham develops an ability which makes people worship him to the point of sacrificing their lives for him. Tom visits Isabelle in jail, hoping to get information on the whereabouts of Alana who's been missing for months. Marco calls Diana to let her know that her sister April has promicin and is nowhere to be found. NTAC gets a new director. Kyle meets a young woman named Cassie who has some advice about how to get Shawn out of his coma. Jordan shows up to deal with the high school kid.
Fear Itself S4, Ep2 Jun. 24, 2007 Fear Itself Diana returns from Spain. NTAC tries to identify the person whose ability makes people's worst fears come true. Shawn returns home from the hospital and his brother Danny tells him that he's thinking about taking promicin. Kyle finds out some interesting facts about Cassie.
Audrey Parker's Come and Gone S4, Ep3 Jul. 1, 2007 Audrey Parker's Come and Gone After taking promicin, an old lady named Audrey Parker develops the ability to astral project from her body. When she's murdered, her spirit tries to reach Tom and Diana to help them find her killer. Shawn decides to re-open the 4400 center and start healing again despite the government's warnings. Ben and Maia come to Seattle to visit Diana. Cassie leads Kyle to some interesting information.
The Truth and Nothing But the Truth S4, Ep4 Jul. 8, 2007 The Truth and Nothing But the Truth Diana catches her sister April, who has survived a promicine shot and gained an ability the full potential of which she fails to grasp - to make anyone answer truthfully to any question posed by her. She has teamed up with a man she loves and they are blackmailing people who have dirty secrets. But then they bite more than they can chew and April's beloved gets murdered. The only way to get the people responsible to answer for their crimes would be for April to turn herself into NTAC custody and lose her precious freedom… Meanwhile, Shawn decides to run for the …
Try the Pie S4, Ep5 Jul. 15, 2007 Try the Pie Now that he knows Kyle is Promicin Positive (“P+”), Tom sets out to track him down. His journey leads him to a town that is no longer on the map and the people of which are not ordinary. Meanwhile, Maia has terrible visions of 4400s and P+es being dragged to prison camps. And her visions always come true.
The Marked S4, Ep6 Jul. 22, 2007 The Marked The NTAC nerd squad bring to their Director's attention a 4400, Curtis Peck, who was a shoestring budget film maker and continues to be one, except that his 4400 ability seems to be to receive script pieces that combine to tell the true, complete answers to haunting questions, like “What happened to Jimmy Hoffa?” and “Who shot JFK?”. And now he's missing and he left a video message where he told that Jordan Collier is not the real threat - there is something far more dangerous, and now they are after him. Peck's producer shows a trailer of the film Peck was supposed …
Till We Have Built Jerusalem S4, Ep7 Jul. 29, 2007 Till We Have Built Jerusalem Shawn gets bad publicity when he ends up having sex with the daughter of a woman whom he cured and it turns out to be a trap when the girl tells the media her story. Maia paints a vision that at first doesn't make sense, but then the nerds at NTAC match it to the most polluted - and more crucially, abandoned - part of Seattle, making it the perfect hiding place for Collier, his 4400s and P+es. Tom and Diana try to investigate, but find out that Collier has set an uncrossable perimeter around his “Promise City”. When Collier starts broadcasting live footage of a P+ …
No Exit S4, Ep8 Aug. 5, 2007 No Exit
Daddy's Little Girl S4, Ep9 Aug. 12, 2007 Daddy's Little Girl
One of Us S4, Ep10 Aug. 19, 2007 One of Us
Ghost in the Machine S4, Ep11 Aug. 26, 2007 Ghost in the Machine
Tiny Machines S4, Ep12 Sep. 9, 2007 Tiny Machines
The Great Leap Forward S4, Ep13 Sep. 16, 2007 The Great Leap Forward