In order to save Wills life, Sydney and Vaughn must destroy a familiar looking Rambaldi device, while Jack makes a risky deal with Khasinaus representative, Mr. Sark. Meanwhile, the CIA believes that one of their own is a mole for The Man; the Alliance comes to a decision regarding the fate of Emily Sloane; Dixons suspicions about Sydney intensify; and Sydney finds herself face-to-face with The Man.