On their way to Long Island for their wedding weekend, Robin and Barney come across a startling family discovery. Meanwhile, Marshall sees something online that changes the course of his journey east, while Lily confronts Ted about letting go of Robin.
| Creator | Craig Thomas |
|---|---|
| Actor | Josh Radnor, Neil Patrick Harris, Jason Segel |
| Country | United States of America |
| Production | 20th Century Fox Television |