Season 4: Los 4400 - Where to watch

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Danny Farrell's newfound ability to spread promicin leads to several hundred deaths, including his mother.

Isabelle works with Tom in order to get close to Jordan. Shawn recruits a small band of promicin positives to break Kevin out of Promise City.

A computer virus attacks a large software company owned by a suspected member of The Marked. Maia visits Promise City.

The Director of National Intelligence pressures NTAC to pursue Richard and Isabelle. Richard is visited by his dead wife, Lily.

Richard kidnaps Isabelle from Collier's Promise City. Richard hopes to start a new life with his daughter.

A lockdown at NTAC threatens the lives of Tom, Diana, Meghan, Shawn, Kyle, Jordan, Isabelle, Maia, Marco, PJ and Brady.

Jordan and his followers annex a run-down part of Seattle, dubbing it "Promise City." Shawn's campaign for city council is threatened.

Tom and Diana search for Curtis Peck, a 4400 film maker whose ability allows him to "know" the truth behind historical conspiracies.

After realizing Tom knows he is promicin-positive, Kyle joins Jordan in a remote town called Evanston.

April's new ability endangers her life. Shawn is approached to run for public office, while Kyle helps Isabelle.

After she is murdered, Audrey Parker attempts to use the special abilities she had in life to lead Tom and Diana to her killer.

Tom and Diana search for a person who has the ability to make people's worst fears come to life. Danny seeks Shawn's help in finding a promicin shot.

A high school student develops an ability after injecting promicin. Tom visits Isabelle in jail, while Diana searches for her missing sister.