The 4400 (2004)

S4E11 Ghost in the Machine

Tom and Diana are in a frantic race to track down the origin of a computer virus threatening to cripple Ubient, a major software company led by the enigmatic Drew Imroth, who is believed to be linked to the marked. At the same time, Maia travels to Promise City, where she is taken by surprise on her birthday with an unexpected visit from her biological parents.