Sarah makes contact with an old friend to ask a favor, while John decides to pay a visit to Sarah's ex and Cameron makes a new friend. Together they infiltrate a resistance safe house and discover they are not alone. Meanwhile, Agent Ellison realizes that Sarah is still alive and a dangerous person from Sarah's past is reawakened.
Elenco: Lena Headey , Thomas Dekker , Summer Glau , Richard T. Jones , Brian Austin Green , Leven Rambin , Garret Dillahunt , Shirley Manson , Stephanie Chaves-Jacobsen .