第 4 季 共 13 集
播出时间:2007年6月18日
第 1 集 The Wrath of Graham
播出时间:2007年6月18日
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.
第 2 集 Fear Itself
播出时间:2007年6月25日
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.
第 3 集 Audrey Parker's Come and Gone
播出时间:2007年7月2日
An elderly woman develops the ability to astral project unseen by others, but she is stuck in limbo when her body is murdered, and she must find a way to contact Tom and Diana to help catch her killer. <br />
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Elsewhere, Shawn decides to start healing people again despite threats.
第 4 集 The Truth and Nothing But the Truth
播出时间:2007年7月9日
"The Truth and Nothing But the Truth" is the fourth episode of season four of the science fiction television series The 4400. The episode aired July 8, 2007 on the USA Network.
第 5 集 Try The Pie
播出时间:2007年7月16日
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.
第 6 集 The Marked
播出时间:2007年7月23日
Jordan wants Shawn to rejoin the movement. Meanwhile, a 4400 with an amazing ability disappears.
第 7 集 Till We Have Built Jerusalem
播出时间:2007年7月30日
"Till We Have Built Jerusalem" is the seventh episode of season four of the science fiction television series The 4400. The episode originally aired on July 29, 2007 on the USA Network.
第 8 集 No Exit
播出时间:2007年8月6日
"No Exit" is the eighth episode of season four of the science fiction television series The 4400. The episode aired on August 5, 2007 on the USA Network.
第 9 集 Daddy's Little Girl
播出时间:2007年8月13日
"Daddy's Little Girl" is the ninth episode of season four of the science fiction television series The 4400. The episode aired on August 12, 2007 on the USA Network.
第 10 集 One of Us
播出时间:2007年8月20日
"One of Us" is the tenth episode of season four of the science fiction television series The 4400. The episode aired on August 19, 2007 on the USA Network.
第 11 集 Ghost in the Machine
播出时间:2007年8月27日
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.
第 12 集 Tiny Machines
播出时间:2007年9月10日
Meghan and Diana learn how to remove the entity from Tom, but the procedure is dangerous. <br />
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Meanwhile, Shawn finds help in his attempt to rescue Kevin from Promise City; and Jordan is betrayed by someone close.
第 13 集 The Great Leap Forward
播出时间:2007年9月17日
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.