Where To Stream How I Met Your Mother Season 6 Episode 11
The Mermaid Theory
- Aired December 6, 2010
- 30 Min
- Rated 7.7
- Number 125 Of 208 Rated Episodes
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.