After Sydney accepted an assignment to be a member of a new black ops sector of the CIA, known as APO, she was shocked to discover that Sloane was heading up the unit. Without an ounce of trust for her nemesis, Sydney kept a watchful eye on him, as did Vaughn, Dixon and Marshall. But she had to keep her suspicions in tow while working with her half-sister and Sloane's daughter, Nadia, in order not to alienate her and lose her trust. But Sydney was hard-pressed to define the enigma that is Sloane when he shot his own daughter in order to save Sydney's life while thwarting the devastating effects of the Rambaldi endgame. Meanwhile, Jack's near-death experience and the truth behind why he had wrongly believed he killed his ex-wife and Sydney's mother, Irina Derevko, strengthened the bond between father and daughter; and fiancŽ Vaughn's revelation that he may not be the man she thought he was caught her completely off guard, and a horrendous car accident left their fates in limbo.

Even more gripping and emotional events are in store for Sydney. After they both survive the crash, she learns that the man she has known as Michael Vaughn is under investigation and suspected of being a double agent. She questions whether their business and personal relationship over the years had all been a lie. But when Sydney discovers that she is pregnant with Vaughn's baby - and Vaughn is ruthlessly gunned down and murdered – she is determined to uncover the truth about him. Meanwhile, because of Jack's past betrayal by Irina, he begins to worry that his daughter may suffer the same fate as he did. He will also have to deal with the fact that he will soon become a grandfather - while still learning how to be a dad. Sloane will also have to do some soul-searching as he makes an unholy alliance in his desperate fight to find a cure for Nadia - who is still in a coma.

New agents will be introduced and a nefarious organization will come to light in Sydney's life as she fights to protect her unborn child - all the while traveling incognito, outsmarting the bad guys and keeping the world safe.

© 2006 American Broadcasting Companies, Inc.
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