Seasons & episodes
S3 · E6Graduation Day 2006-07-09 · 42 min
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.
S3 · E7The Home Front 2006-07-16 · 42 min
With the help of Dennis Ryland, NTAC track down the remining members of the NOVA group. Nikki pays Shawn a visit.
S3 · E8Blink 2006-07-23 · 42 min
Tom and Diana are drugged with a hallucinogen, that was created from oil that was secreted from the hands of a 4400.
S3 · E9The Ballad of Kevin and Tess 2006-07-30 · 42 min
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.
S3 · E10The Starzl Mutation 2006-08-06 · 42 min
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 future.
S3 · E11The Gospel According to Collier 2006-08-13 · 42 min
NTAC and the 4400 Center work together to find Jordan Collier. Kyle Baldwin gets a surprising visitor at the state prison.
S3 · E12Terrible Swift Sword 2006-08-20 · 42 min
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.
S3 · E13Fifty–Fifty 2006-08-27 · 42 min
Tom and Diana continue their investigation on Jordan Collier's plan for mankind. Dennis Ryland rejoins NTAC. Isabelle prepares for battle.
S4 · E1The Wrath of Graham 2007-06-17 · 42 min
A high school student develops an ability after injecting promicin. Tom visits Isabelle in jail, while Diana searches for her missing sister. Following the advice of a young woman, named Cassie, Kyle is able to wake Shawn from his coma. Jordan Collier's conscience gets to him. Meanwhile, NTAC gets a new director.
S4 · E2Fear Itself 2007-06-24 · 42 min
Tom and Diana search for someone who has the ability to make people's worst fears come true. Danny seeks Shawn's help to find a promicin shot. Meanwhile, Cassie leads Kyle to a book that contains a prophecy about Jordan Collier.
S4 · E3Audrey Parker's Come and Gone 2007-07-01 · 42 min
Audrey Parker, an elderly woman, takes promicin and develops the ability to astral project. Meanwhile, Shawn decides to start publicly healing people again despite threats from the government to shut him down. And Ben and Maia return to Seattle to visit Diana.
S4 · E4The Truth and Nothing But the Truth 2007-07-08 · 42 min
Diana locates her sister, April, who took promicin and developed an ability that puts her life in jeopardy.
S4 · E5Try The Pie 2007-07-15 · 42 min
Tom tracks Jordan to a small town, where he meets a woman who can relieve people's stress by talking to them. Meanwhile, Marco and Diana have a nice talk. Maia's visions are giving her nightmares.
S4 · E6The Marked 2007-07-22 · 42 min
Jordan wants Shawn to rejoin the movement. Meanwhile, a 4400 with an amazing ability disappears.
S4 · E7Till We Have Built Jerusalem 2007-07-29 · 42 min
Jordan Collier's movement takes a huge step forward when his followers settle in the heart of Seattle.
S4 · E8No Exit 2007-08-05 · 42 min
Tom, Diana, Jordan, Shawn, Kyle, Isabelle, Maia, Meghan, Marco, PJ and Brady all wake up inside NTAC without any memory of how they got there.
S4 · E9Daddy's Little Girl 2007-08-12 · 42 min
Richard surprises Isabelle when he shows up in Promise City but the happy reunion takes a turn when Richard kidnaps her in hopes to start a new life with his daughter.
S4 · E10One of Us 2007-08-19 · 42 min
Tom has trouble focusing on the hunt for Richard Tyler because of dreams he's having about the future.
S4 · E11Ghost in the Machine 2007-08-26 · 42 min
Tom and Diana must race to find the source of a computer virus that could bring down Ubient software, one of the world's largest software companies that is run by suspected member of the marked, Drew Imroth. Meanwhile, Maia visits Promise City where she receives an unexpected birthday surprise: a visit from her birth parents.
S4 · E12Tiny Machines 2007-09-09 · 42 min
Meghan and Diana learn how to remove the entity from Tom, but the procedure is dangerous. Meanwhile, Shawn finds help in his attempt to rescue Kevin from Promise City; and Jordan is betrayed by someone close.
S4 · E13The Great Leap Forward 2007-09-16 · 42 min
Paramedics try to resuscitate Susan Farrell. They believe that she took promicin and lost the 50/50 lotto that comes with it. Danny is certain that she did not take the shot. After arriving at the hospital with the paramedics, things get complicated as everyone around Danny start to die. Garrity and another NTAC agent are sent to the hospital to assess the situation.