The Mermaid Theory

How I Met Your Mother: Season 6: Episode 11

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How I Met Your Mother
The Mermaid Theory

Episode Details & Credits

CBS | Air Date: December 6, 2010
Starring: Alyson Hannigan, Neil Patrick Harris, Jason Segel, Cobie Smulders, Josh Radnor
Summary: As Ted and Zoey test whether a guy and a married woman can be friends, he tries to befriend her husband as well. Marshall and Robin try hanging out alone. Barney and Lily have a spat.
Creator: Craig Thomas and Carter Bays
Genre(s): Comedy, Drama
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Season 6 Episodes

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