After the Jeep explosion, John's 16th birthday makes him confront the fact that he's destined to be alone. Meanwhile, after Cromartie's massacre, Agent Ellison must face off against both the Feds and his faith.
Sarah and Cameron take it upon themselves to investigate a nuclear power plant. John becomes less enthusiastic about academics, but flourishes socially with the help of a new friend, Riley. Meanwhile, Catherine Weaver gains another piece of the puzzle for her pet project.
Cromartie decides to go after Charley’s wife, Michelle, in an effort to use Charley to get to the Connors. Meanwhile, John finds himself caught in an uncomfortable situation between his potential girlfriend, Riley, and the Terminator who says she loves him, Cameron.
A software glitch causes Cameron to forget who she is. She goes missing from the Connors and is taken in by a street kid named Jody. Cameron and Jody end up at a halfway house where Cameron meets with a social worker who uncovers some of Cameron's distant memories. Meanwhile, Catherine Weaver meets with Agent Ellison to discuss his future at Zeira Corp, and Ellison does some digging into Weaver's past.
John and Derek infiltrate a military academy in order to protect an integral member of the future resistance. Meanwhile, Weaver's first assignment for Ellison takes an interesting turn of events when he discovers a specter from his own past.
Sarah and Cameron somewhere they're not supposed to be. Investigating. A man calls out "anyone here?" But they're gone.
Dr. Boyd Sherman. That's the man but what's his connection to Skynet? As John drives Cameron and Sarah back, we learn that Sherman's name was on the bloody list left on the wall by the dying resistance fighter.
James Ellison, alone at home. There's a knock on the door. "James Ellison?" Ellison stares at himself -- or rather, a robotic version of himself. As he looks the end in the eye, Terminator Ellison is destroyed by... Cromartie?
John and Riley's impromptu trip to Mexico results in deadly consequences. Meanwhile, Sarah and Ellison finally come face-to-face.
Emmy Award winner Richard Schiff (“The West Wing”) makes a special guest appearance in an all-new episode. Sarah’s mystifying nightmares creep into her real life – but what do they mean for her and John? Meanwhile, Derek and Jesse investigate a possible Skynet conspirator.
Sarah's obsession with the three dots leads her to a company that she believes may have Andy Goode's Turk. Meanwhile, Jesse's plans complicate things even further, and Weaver introduces Ellison to someone very important.
Cameron's secret is exposed. A Terminator sent to the wrong time causes catastrophic results changing history.
Sarah and Cameron work to save a family on the list with a connection to Derek in the future. Meanwhile Jesse's life hangs in the balance.
Sarah's obsession with the three dots intensifies when she tracks down a blogger with a intimate knowledge of the symbol, and she ends up finding something she never expected. Meanwhile, Riley gets closer to John and faces off with Cameron.
An injured Sarah is guided by the image of John's father, Kyle Reese, while Weaver's move to protect John Henry results in deadly consequences.
Sarah, John, Cameron and Derek investigate the company town connected to the destroyed factory while Weaver sends her own man into town in search of a potential survivor.
Haunted by nightmares of the man she killed in the factory, Sarah checks in to a sleep clinic. When suspicious things begin happening, Sarah suspects Skynet may be using the facility for brain-mapping.
The return of Cameron's glitch results in regrettable consequences for everyone, and Riley fears Cameron has discovered her secret.
Jesse flashes back to a life-altering mission aboard her submarine, the Jimmy Carter. Sarah and John decide they can't continue living in their house and make plans to leave.
Jesse's submarine mission in the future takes a fatal turn that has unforeseen effects on John, Sarah and Derek in the present. Before heading out, Sarah deals with Cameron and John makes a tough choice.
Fearing for her life, Sarah stashes John in a safe house. Cameron and Derek struggle to work together after she reveals a big secret. John Henry becomes compromised.
When John attempts to rescue Skynet's latest target he finds himself closing in on Weaver, but at what cost? Game plans change, causing Sarah and Ellison to reunite. Meanwhile, Weaver learns Ellison's secrets.
The Connors and Weaver face an epic battle that will change everyone's fortunes.