Who knows that Sydney is a double-agent?
 

Less than a handful know of her dual alliance: her father Jack, the CIA and most recently her friend, reporter Will Tippin.

Although usually inevitable for one's personal life to share space with one's work, Sydney's case is different. At SD-6, only Jack and Sydney know of each other's dual-agent status. Sydney's handler Vaughn, plus Weiss and CIA Director Devlin, have long been aware of Jack and Sydney's placement within SD-6.

Ever since Sydney was apprehended and questioned by the Department of Special Research in connection with Rambaldi's Prophecy, it is a matter of record that the FBI are also in the picture, but have also opted to keep a low profile on this matter.

Francie still has no idea that Credit Dauphine is anything more than a bank that overworks and stresses her roommate. Will, however, learned the truth about SD-6 while pursuing a story for the newspaper after Daniel Hecht's murder. Now his fate hangs truly in the balance