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A modern-day warrior and single mom hides from a government out to get her and her teenage son.
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John goes crazy when he's confined to the house, and Sarah looks up an old friend for help.
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Sarah befriends a man important to Skynet, and Cromartie tracks a scientist to help him with regeneration.
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John becomes separated from Sarah and Cameron while searching for stolen cargo, and he finds another Terminator.
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During the chess competition, Sarah meets a stranger with a history similar to hers being pursued by a terminator.
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With Derek severely injured, John calls on Sarah's former fiancé Charlie, an EMT, to provide medical assistance.
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As Derek recovers, Cameron tries to recover the missing cyborg hand. Sarah breaks into Ellison's apartment.
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Derek catches Cameron in a lie that puts them inside Vick's head, and Sarah continues to track the Turk.
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Cromartie closes in on John at school, while Agent Ellison discovers that Cromartie is impersonating an FBI agent.
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John finds himself battling an unlikely opponent alone. Ellison deals with the aftermath of Cromartie's massacre.
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Sarah, Derek, and Cameron try to prevent a nuclear meltdown. John meets someone new.
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Cromartie uses Charley and Michelle to lure Sarah and leave John alone. Catherine Weaver has a job proposal for Agent Ellison.
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A malfunction causes Cameron to believe that she is a human from the future. Sarah accompanies her pregnant landlady to the hospital.
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John and Derek sign up for military school to protect a key future Resistance hero from termination. Sarah and Cameron protect a young boy.
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A woman from Derek's past surprises him. Elsewhere, Sarah, John, and Cameron wonder what a T1001 would need with a doctor.
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While Sarah and Cameron search for the person who robbed the house, Cromartie returns to hunt down Cameron and John.
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Cromartie kidnaps Sarah. When Derek, Cameron, and Ellison discover what has happened, it leads to a deadly confrontation.
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Jesse tries to convince Derek that she captured an important figure from the future. John and Cameron discover Cromartie's body is missing.
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Sarah's quest to find the meaning behind the "three dots" leads to a technology firm seeking an advanced microchip.
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Cameron learns that a terminator was accidentally sent back to 1920s Los Angeles, and she tries to find out what happened to him.
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Terminators come after a family whose unborn daughter plays an important role in the war against the Machines.
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Sarah turns to a UFO convention for answers about the "three dots.”Ellison begins working with Catherine Weaver's prototype, "John Henry."
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Sarah has visions of John's dead father. Jesse removes Riley from the hospital after her suicide attempt.
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Sarah attends a memorial service for Catherine Weaver's victims at the heating and air conditioning plant and finds a connection to Skynet.
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Sarah suspects that something fishy is going on at the medical clinic where she is being treated for insomnia.
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While Derek does surveillance on a lawyer he suspects may be connected to Skynet, Sarah and Cameron begin to have doubts about Riley.
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As the Connors prepare to move, they find out that Riley is dead, and Sarah begins to doubt Cameron's motives.
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Jesse's plan to turn John against Cameron backfires when John discovers that Jesse killed Riley.
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Sarah and John hit the road, where she reveals to Charley that her cancer may have emerged.
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Sarah, John, and Cameron save Catherine Weaver's daughter Savannah from being killed by a machine.
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When Sarah gets arrested, John and Cameron disobey her orders and help her escape.