Discovering that NTAC is behind the disease plaguing the 4400s, Tom and Diana try to get to the bottom of NTAC's cover-up, while Kyle considers turning himself in.
Quest roles:
Billy Campbell(Jordan Collier), Peter Coyote(Dennis Ryland), Jeffrey Combs(Kevin Burkhardt), Richard Kahan(Marco Pacella), Christie Laing(Isabelle), Andrew Airlie(Brian Moore), Karina Lombard(Alana Mareva), Garret Dillahunt, Tom Verica, Keegan Connor Tracy, Christie Wilkes(Rose Woodard), Jonah Bay(Nate McCullough), Nancy Sorel(Jane Orman)