Trivia: The glyph for this episode is "TAKEN."
Trivia: In the shot of Olivia on her cell phone just before she sees the "castle," a butterfly can be seen on a trash can behind her to screen-left. This is a clue toward the next episode, "The Dreamscape."
Trivia: The Observer is standing by a tree to the left in the far background as Olivia talks to Peter on her cellphone and is told about the "red castle."
Walter: Actually I was referring to the equation. Dashiell was obsessed with it.
Olivia: Obsessed. In what way?
Walter: He couldn't complete it. I tried to help him solve it once and he came at me with a plastic spork.
Olivia: What is it, Walter? Can we talk to him?
Walter: I guess that would depend on whether he has succeeded in killing himself or not.
Walter: They hoped to broadcast the flashing lights during commercials so that the viewers would have no choice but to buy their products. Unfortunately, it merely caused nausea which was unfortunate because apparently, people don't like to shop when they feel like they're going to throw up.
Walter: And you look different too, somehow. That smile. Have they altered your medication? Wouldn't surprise me. These medieval quacks are more proficient at phrenology than psychopharmacology.
Dashiell: I miss your jokes, Walter.
Peter: After some of the things I've seen in the last three months, Walter strikes me as being one of the sanest people I know.
Joanne: Seems crazy that some numbers can make a machine like this work.
Mitchell: Look around your house, your office, your kitchen--numbers make everything work.
Blair Brown and Mark Valley are credited but don't appear.
Original International Air Dates:
Sweden: November 20, 2008 on Kanal 5
United Kingdom: November 23, 2008 on Sky One
Australia: December 8, 2008 on Nine
Norway: February 22, 2009, on TVN
Finland: February 23, 2009 on MTV3
Germany: May 11, 2009 on ProSieben
Belgium: June 25, 2009 on RTBF2
France: July 8, 2009 on TF1
New Zealand: August 19, 2009 on TV2
Poland: October 29, 2009 on TVN
Slovakia: November 22, 2009 on Markiza
Czech Republic: March 5, 2010 on Nova Cinema
Astrid: What's up, Chachi?
Referencing Chachi Arcola, The Fonz's nephew on Happy Days. Scott Baio played the character, who proved popular enough to be moved into a spinoff, Joanni Loves Chachi with Erin Moran. The series only lasted two seasons before being cancelled and Chachi returned to Milwaukee to hang out with his uncle.