 Sydney s search for her past leads to an imprisoned Sark, but their Q&A is cut short when he becomes the ransom for a pair of abducted CIA scientists by the Covenant, whose kidnappers may be tied to the murder of his father. Meanwhile, Jack contacts an old friend of sorts for info on Sloane s new world-peace project in Switzerland. Also, Vaughn makes a decision about his future as an operative for the CIA.