The name of the town pays homage to The Twilight Zone episode, "A Stop at Willoughby"
Early on in the episode, as Damon and Stefan are walking to fill up Damon's car,they walk past a Volvo S60, which is the same car that Edward drives in the Twilight books. This is one of the few references to Twilight in the series.
Elijah and Katherine are revealed to be in a relationship.
Scenes in Willoughby were actually shot in "Stone Mountain Village" in Stone Mountain, Georgia.
This episode started filming on February 8, 2013.