Nina releases a deadly computer virus into CTU's systems after getting captured by Jack and Chase. Sherry runs out of options and decides to directly confront Alan Milliken but things go too far. Chloe and the rest of the tech crew work overtime to combat the virus.
When she's captured by Jack and Chase, Nina unleashes a self repeating worm in CTU's computer system that cuts off inter-agency connectivity and endangers undercover CTU operatives around the world. Sherry runs out of options and decides to break into Alan Milliken's house and steal his cell phone in order to get incriminating evidence.—Derfel85