Terminator: The Sarah Connor Chronicles

Lena Headey as Sarah Connor
Now Sarah struggles to balance her role as a mother with her duties preparing John for a future. Only this future is one in which mankind is threatened with extinction by an artificial intelligence called Skynet. Sarah clings to the hope that she can prevent Skynet from killing billions in a nuclear attack that will be known as "Judgment Day," all the while aware of her own mortality and impending death.

Thomas Dekker as John Connor
On the run from Cromartie, the machine programmed to assassinate him, John has to figure out who he must be now. Is he John Baum or John Connor? Will he, can he, become the soldier and leader that mankind so desperately needs?

Summer Glau as Cameron Phillips
A reprogrammed Terminator, Cameron poses as John's sister. Her model number is a mystery. However, she is an advanced cyborg unlike any we have ever seen; with uniquely human characteristics and drop-dead looks, she is the most lethal and convincing infiltrator yet.

Richard T. Jones as James Ellison
Highly intelligent, doggedly determined, Ellison was once the FBI's top dog. After he was assigned the seemingly simple task of hunting down fugitive Sarah Connor, Ellison's life and career took an unexpected turn. His stature diminished, his faith challenged, Ellison will now not stop in his quest to learn the truth.

Brian Austin Green as Derek Reese
Headstrong brother to John's father, Kyle, Derek journeyed back from the future with his own ideas on how to stop Skynet. Now taking refuge with the Connors, Derek will do whatever it takes to prevent the future he knows to be true.

Shirley Manson as Catherine Weaver
Fearless and focused, Catherine Weaver is the dedicated CEO of ZeiraCorp, the cutting edge, high-tech company she founded with her late husband. Focused on the development of artificial intelligence, Weaver has developed an unnatural obsession with machines and their function; even more, Weaver just may be the person with the tools to evolve Andy Goode's Turk into Skynet.

Leven Rambin as Riley Dawson
The picture of teenage normalcy, Riley first appears on John's radar at school. Riley's cool, an outsider like John, so it's no surprise that they're immediately drawn to each other. But with the future leader of mankind, any friendship is a dangerous risk -- both to his safety and hers.

Garret Dillahunt as Cromartie
Following the Connors to the present day, the T-888 model dubbed Cromartie will stop at nothing until his mission is complete: Cromartie must kill John Connor. After being forced to rebuild himself, Cromartie seized the identity of b-movie actor George Laszlo before infiltrating the FBI and massacring dozens of agents.