: Sydney discovers that her best friend Francie has been murdered and replaced by a genetic double, Allison Doren .
: Sydney confirms Allison's identity when the double accepts a scoop of coffee ice cream—a flavor the real Francie famously hated . Alias - Season 2Eps22
: After a brutal fight with Allison, Sydney collapses and wakes up in Hong Kong . She is stunned to learn from Vaughn that she has been missing for two years and that he is now married . Alias: “Second Double”/“The Telling” - AV Club : Sydney discovers that her best friend Francie