The Mermaid Theory
Run Time: 22 mins
Air Date: Mon, 6 Dec 2010
Average Rating: ⭐ 7.6 (28 votes)
CBSSeason 6 - Episode 11
Average Rating: ⭐ 7.6 (28)
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.