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.
| Title | The Mermaid Theory |
|---|---|
| Genres | Comedy |
| Release Date | 2010-12-06 |
| Episode Runtime | 00 Hours 22 Minutes |
| Season Number | 6 |
| Episode Number | 11 |
| Production Companies | Carter Bays, 20th Century Fox Television |
