CBS has issued the press release for next week's episode of How I Met Your Mother, "Vesuvius". Lucy Hale returns as Robin's sister Katie and Chris Kattan returns as Jed Mosely. Jon Heder guest stars as Narshall in this episode.
"Vesuvius" — On the morning of the wedding, Lily and Robin have a fight and Barney freaks out about which suit to wear. Meanwhile, the gang watches a movie Ted has forbidden them to see, on the final season of HOW I MET YOUR MOTHER, Monday, March 3 (8:00-8:30 PM, ET/PT) on the CBS Television Network.
More information about this episode is available in our Episode Guide.