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Doppelgangers is the twenty-fourth episode of the fifth season of How I Met Your Mother, and the one hundred twelfth episode overall.
Josh Radnor (Ted Mosby),
Jason Segel (Marshall Eriksen),
Cobie Smulders (Robin Scherbatsky)
Neil Patrick Harris (Barney Stinson)
Alyson Hannigan (Lily Aldrin)
Ben Koldyke (Don),
Lyndsy Fonseca (Daughter),
David Henrie (Son)
Bonnie Bailey-Reed (Flo),
Brianna Belladonna (Petra)
Behind the Scenes