Derek finds the brain chip from Vick that Cameron had kept. John builds an interface for it and they discover a computerized traffic system is important to Skynet. Sarah decides it must be sabotaged. Meanwhile, Cromartie is checking through school records in search of John.
Elenco: Lena Headey , Thomas Dekker , Summer Glau , Richard T. Jones , Brian Austin Green , Leven Rambin , Garret Dillahunt , Shirley Manson , Stephanie Chaves-Jacobsen .