Episode Titles: Submergence
You are viewing a list of 1 The Big Bang Theory episode featuring "Submergence" in their title.
Season 9, Episode 15 - The Valentino Submergence
Aired February 11, 2016
Sheldon and Amy host a live Valentine's Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore.