- Title: How I Met Your Mother - The Mermaid Theory, Season 6 Episode 11
- Movie Genres: How I Met Your Mother, TV-Series
How I Met Your Mother - The Mermaid Theory, Season 6 Episode 11
When Ted's new friendship with Zoey tests the theory that 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.