The 4400 › Season 4

S4 E11: Ghost in the Machine

Tom and Diana must race to find the source of a computer virus that could bring down Ubient software, one of the world's largest software companies that is run by suspected member of the marked, Drew Imroth. Meanwhile, Maia visits Promise City where she receives an unexpected birthday surprise: a visit from her birth parents.

Air date	Aug 26, 2007
Runtime	42 minutes
TMDB rating	★ 7.6/10