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How I Met Your Mother

Series 6 Episode 11: The Mermaid Theory

When Ted's friendship with Zoey begins to make her husband jealous, Lily suggests that he befriend him. Meanwhile, Marshall and Robin spend some one-on-one time together and end up testing Barney's Mermaid Theory.

Category
Sitcom
Original air date
06/12/2010
Cast and crew
  • Pamela FrymanDirector
  • Josh RadnorTed Mosby
  • Jason SegelMarshall Erikson
  • Alyson HanniganLily Aldrin
  • Neil HarrisBarney Stinson
  • Cobie SmuldersRobin Sherbatsky
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