The Enemy Walks In

Summary

Sydney finds herself face-to-face with her mother, whose intentions for her daughter are made chillingly clear. Meanwhile Sydney continues her search for Vaughn, not knowing if he is dead or alive after being swept away by a wall of water in Taipei. Will's life is forever changed when he learns the truth about SD-6 and Sydney's life as a double agent. Dixon must decide whether or not to inform Sloane of Sydney's suspicious activities.

Guest stars

• Greg Grunberg as Eric Weiss
• Merrin Dungey as Francie Calfo
• Ron Yuan as Haz Mat Guy (uncredited)
• Chris Harrison as Reporter
• Patricia Wettig as Judy Barnett
• Roger Lim as Taiwanese Gasping Body
• Clayton Landey as Wilcox (uncredited)
• Derrick O'Connor as Alexander Khasinau
• Stuart W. Yee as The Tester
• Jamie McShane as C.I.A. Agent