How I Met Your Mother

The Mermaid Theory

E11    Dec 6, 2010    23m    TV-14
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When Ted's new friendship with Zoey tests the theory that single men and married women can't be friends, he invites her husband, "The Captain," to hang out with them. Meanwhile, Marshall and Robin decide to spend alone time together, and Barney and Lily possibly have a fight.
Where to Watch The Mermaid Theory
Cast of The Mermaid Theory
  • Josh RadnorTed Mosby
  • Neil Patrick HarrisBarney Stinson
  • Jason SegelMarshall Eriksen
  • Alyson HanniganLily Aldrin
  • Cobie SmuldersRobin Scherbatsky
  • Jennifer MorrisonZoey Pierson
  • Kyle MacLachlanGeorge Van Smoot
  • Tamara Lynn DavisIris
  • Angus McClellandAngus
  • Lyndsy FonsecaDaughter
  • David HenrieSon

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