The Mermaid Theory

Overview

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.

Episode Information

Guest Stars

Jennifer Morrison

Zoey Pierson

Kyle MacLachlan

George Van Smoot

Tamara Lynn Davis

Iris

A

Angus McClelland

Angus

Lyndsy Fonseca

Daughter

David Henrie

Son