This episode marks the first appearance of Assistant Director Walter Skinner; who would later become a central character in the series.
This is the first episode that the Cigarette Smoking Man speaks in.
Principal setting: Baltimore, Maryland.
Cigarette Smoking Man's first speaking line: "Of course I do."
Plot Hole: How did the old detective just know exactly where the body was buried in the entire foundation of the factory? I understand that you can't underestimate the power of a good hunch, but how far that does go? Are they implying that the detective has a "hunch" power?
Continuity: Mulder claims he made his parents refer to him as "Mulder" rather than "Fox," but in every other episode when he is visiting with or talking to his mother, she calls him "Fox."
Edit: Given the unlikelihood of a child making his parents call him by his last name, this claim is probably just a joke.
Revealing Mistake: When Mulder first starts his surveillance and watches Tooms drive away in his work van, the last shot of Mulder is reversed.
Plot Hole: It seemed awfully quick that in the few months of Tooms's incarceration that his condemned apartment building is torn down and a brand new shopping mall is almost completed.
Mulder: Did you have that sandwich I asked you to bring?
(Scully reaches into a bag and rummages about)
(Mulder feigns laughter)
Mulder: Excuse me.
Mulder: Could you help me find my dog?
(Tooms stomps off)
Mulder: He's a Norwegian Elkhound!
(Tooms gets into his van)
Mulder: His name is Heinrich!
(Tooms drives away)
Mulder: I use him to hunt moose!
Scully: There's only room for one.
Mulder: You can get the next mutant.
(Skinner hands CSM a file that says, "Bureau File Number X129202 Eugene Victor Tooms — Closed")
Skinner: Have you read this report? Do you believe them?
Smoking Man: Of course I do.
Mulder: Oh, at 11:30, station 790, Pete Rose Late Night Sports Talk Radio Show.
Scully: I wouldn't miss it for the world.
Arlan Green: (to Tooms) I hope you'll be comfortable, Eugene. The room in the back is small, but I'm sure you'll be able to squeeze in.
Mulder: You think they would have taken me more seriously if I wore the grey suit?
Scully: But sir, the very nature of the X-Files cases often precludes orthodox investigation.
Skinner: Are you suggesting that the bureau adopt separate standards for you and Agent Mulder?
Scully: No, sir.
Skinner: Are you suggesting that Agent Mulder obstructs you from proper procedure?
Scully: No, sir. If anything, I'm suggesting that these cases be reviewed with... an open mind.
Mulder: If there's an ice tea in that bag, could be love.
Scully: Must be fate, Mulder. Root beer.
Mulder: They're out to put an end to the X-Files, Scully. I don't know why, but any excuse will do. Now, I don't really care about my record, but you'd be in trouble just for sitting in this car and I'd hate to see you to carry an official reprimand in your file because of me.
Mulder: I... I... even made my parents call me "Mulder".
Scully: Mulder, I wouldn't put myself on the line for anybody but you.
Henry Beckman, who originally appeared in 'Squeeze' returns as Detective Frank Briggs.
This episode is a sequel to "Squeeze." This episode is sometimes called "Squeeze II" in some TV listings.
The movie Mulder is watching in his apartment is the original version of The Fly (1958),directed by Kurt Neumann and staring Vincent Price, Patricia Owens, David Hedison and Betty Lou Gerson.