Dizi Adı: Alias
Bölüm Adı: Doppelgänger
Sezon/Bölüm: 1. Sezon 5. Bölüm
Yayın Tarihi: 28 Eki. 2001

Sydney’s secret double agent status is jeopardized after she smuggling a biotech engineer into SD-6 from her mission in Berlin. Will meets a woman who confesses that she was having an affair with Danny shortly before his death. Vaughn informs Sydney that her father may be working for a third secret operative agency.