Originally conceived as a single episode, the story was expanded into two parts with the previous episode (Spree (2006)). This is the first multi-part story in the series, and marks the beginning of a much more serial, arc-driven format for the show.
When Don talks to his father about being beaned years ago in Little League, Don says the person who hit him was named John Kinsella. John Kinsella was the father of Kevin Costner's character, Ray Kinsella, in the movie "Field of Dreams".
The license number on the van is 3PC1296 and the LAPD case number is 19376.