Robin's musical past emerges again as the group learns of someone named Simon from Robin's past. Barney searches for more Robin Sparkles memorabilia.
| Title | Sandcastles in the Sand |
|---|---|
| Genres | Comedy |
| Release Date | 2008-04-21 |
| Episode Runtime | 00 Hours 22 Minutes |
| Season Number | 3 |
| Episode Number | 16 |
| Production Companies | Carter Bays, 20th Century Fox Television |
