A doctor is brought in to retrieve the data from Chuck's brain and he ends up murderered. Casey and Sarah turn against each other suspecting the other to be the killer. Chuck initially suspects the murderer is Sarah and things are awkward at the dinner they both attend at his sister's. It turns out the doctor faked his own death and kidnaps Sarah in order to get her to tell her where Chuck is. While trying to rescue her, Chuck gets captured. After a fight in a helicopter, Chuck is forced to land the vehicle himself.
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