Trivia: Peter picks up a Bazooka Joe bubble gum wrapper with the punchline "You can't get THERE - from HERE," hinting at the following week's episode.
When Peter and Sheriff Mathis begin their examination of Krista's body at the morgue, her left eye twitches slightly.
Trivia: The Observer appears at the first crime scene, in the crowd behind the police lines, as Peter drives by.
Trivia: The glyph code for this episode is RETURN.
Walter: The Hadron Super Collider is less complicated than that infernal dishwater.
Astrid: Next time, don't use laundry detergent, and the dishwasher will work fine.
Sheriff Mathis: You're FBI, huh? What exactly is a civilian consultant?
Peter: Sometimes people with certain areas of expertise can offer them to the Bureau on a consulting basis. My area of expertise is weird.
Deputy Ferguson: You mean difficult to explain?
Peter: No, I mean the strange, the inexplicable.
Walter: You know what you're putting into our bodies? Death! Delicious strawberry-flavored death!
Music: Midnight Rider (The Allman Brothers Band), Classical Gas (Mason Williams), She's Doing Fine (Violet Sedan Chair), Is There A Ghost (Band of Horses)
Blair Brown is credited but doesn't appear.
Canada: May 6, 2010 on A
Australia: May 12, 2010 on GO!
UK: May 18, 2010 on Sky1
Latin America: May 25, 2010 on Warner Channel
Sweden: July 29, 2010 on Kanal 5
Germany: October 11, 2010 on ProSieben
Poland: January 27, 2011 on TVN
Finland: February 9, 2011 on MTV3
Czech Republic: February 25, 2011 on Nova Cinema
Slovakia: December 28, 2012 on Dajto