When 4400s around the world come down with life-threatening illnesses, Ryland comes back to NTAC and orders the sick - and even unaffected 4400s - to be quarantined. Tom and Diana race to find a cure and discover a shocking secret in the process.

Tom and Diana continue to investigate the disappearance of the 4400 children. Isabelle and Shawn's relationship becomes public.

"The Ballad of Kevin and Tess" is the ninth episode of season three of the science fiction television series The 4400. The episode aired July 30, 2006 on the USA Network.

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.

Diana locates her sister, April, who took promicin and developed an ability that puts her life in jeopardy.

Jordan Collier's movement takes a huge step forward when his followers settle in the heart of Seattle.

Tom has trouble focusing on the hunt for Richard Tyler because of dreams he's having about the future.

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.