Alias

Sydney, on the hunt for the truth behind her missing two years, confronts Sark, who is behind bars in CIA custody. But when a new terrorist organization, The Covenant, demands Sark in exchange for two scientists they've kidnapped, Sydney has to arrange a prisoner exchange against her will... only to discover a connection to her lost time. Meanwhile, Jack confronts Sloane about Sloane's possible role in his daughter's disappearance.