Director Bryan Spicer had the services of David Duchovny for his uncredited cameo for approximately an hour.
This episode is left on a cliffhanger because the writers believed that the series would be back for a second season. This story is concluded in Jump the Shark (2002), featuring the Gunmen (who made their debut on The X-Files in 1994), Jimmy Bond (Stephen Snedden), Morris Fletcher (Michael McKean), Yves Adele Harlow (Zuleikha Robinson), and Kimmy the Geek (Jim Fyfe).
The Lone Gunmen impersonate three employees of Fenix to get past a facial recognition security system, and photos of the people they impersonate appear on screen. The pictures are of the series executive producers Frank Spotnitz (Langly), Vince Gilligan (Frohike), and John Shiban (Byers).
Michael McKean bites his knuckles when talking about Yves. This was a frequent habit of his character "Lenny" and his roommate "Squiggy" on Laverne & Shirley (1976) whenever they saw a beautiful woman.
In a rare moment of continuity, Byers' face is still blue when he appears in the next episode in the X Files universe - Nothing Important Happened Today (2001).