Alias: Almost Thirty Years

Jack and Sydney race to rescue Will, agreeing to trade the Rambaldi document in Sloan's possession for him. Vaughn figures out what Sydney is up to and agrees to help her destroy a Rambaldi device while Jack does the exchange for Will. Upon destruction the device unleashes a flood that seemingly drowns Vaughn as Sydney is captured. She finds the person in charge hasnt been Khasinau, but rather her mother who finally shows herself.