Season 4
13 episodes
42 min. per episode
Where to watch
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Four thousand missing people return, forever altered, sparking a race against time to uncover their secrets and save humanity.
Episodes
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.
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.
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.
Diana catches her sister April, who has survived a promicin 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 mayor's office and Isabelle helps Kyle translate the coded section of the White Light book - which results in a shocking revelation.
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.
As the reappearance of 4,400 missing persons on a single day confounds the global community, federal agents on the case slowly discover the ways in which the victims have been changed.