The 4400 - Season 3 (2006)

Tom and Diana must hunt down a kidnapper who targets 4400 children. Maia's sister, Sarah appears.

Tom and Diana track down the 4400 children kidnapper.

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.

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.

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.

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.

A serial killer aims at people with a certain chromosome and Shawn gets a 4400 wedding cigar.

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.

The Nova Group escapes from prison so Ryland decides to develop his troops at the fastest and most ruthless possible.

Jordan Collier's strategy is spread out 4400-abilities to everybody who wants them, and Devon is eager to be the first to try.