How I Met Your Mother backdrop

How I Met Your Mother S6E11 — The Mermaid Theory

7.8

How I Met Your Mother•Season 6•Episode 11

The Mermaid Theory

7.8/10 · 4,074 votesDec 6, 201023 min

Ranked #15 of 24 in Season 6•−0.2 vs season avg

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

Directed byPamela Fryman

Written byRobia Rashid

Previous episodeE10 · Blitzgiving Next episodeE12 · False Positive

Seasons9

All 1 2 3 4 5 6 7 8 9

Cast5

Josh Radnor

Josh Radnor

Ted Mosby

Neil Patrick Harris

Neil Patrick Harris

Barney Stinson

Jason Segel

Jason Segel

Marshall Eriksen

Alyson Hannigan

Alyson Hannigan

Lily Aldrin

Cobie Smulders

Cobie Smulders

Robin Scherbatsky

Crew2

R

Robia Rashid

Writer

Pamela Fryman

Pamela Fryman

Director

Discussion

0 comments

Join the conversation

Share your take and reply to other fans.

No comments yet

Be the first to share your thoughts on this episode.

Episode Summary

"The Mermaid Theory" is episode 11 of How I Met Your Mother season 6. It scored 7.8/10 from 4,074 votes, ranking #15 of 24 episodes this season (season average 8.0). Directed by Pamela Fryman and written by Robia Rashid, it aired on December 6, 2010.

Next: E12 · False Positive Best of Season 6