Storyline: The investigation into the death of a surfer gets Lisbon back in touch with an old flame, while Summer makes a fateful decision that could affect her relationship with Cho.Trivia: The title of this episode is a play on words from the title of the Douglas Adams novel "So Long, and Thanks for All the Fish". This is the fourth book in the "Hitchhiker's Guide to the Galaxy" trilogy. The phrase was also used in the initial book in the series ("The Hitchhiker's Guide to the Galaxy"), when all of the dolphins on Earth disappeared leaving that message behind.Best Quote:Lisbon: So, why didn't you let me in on your brilliant plan? Jane: Oh, you were very busy with Greg. Lisbon: I am never too busy to solve a murder. Jane: Well, you seemed to be very busy with Greg.