Rock singer Jon Bon Jovi was originally booked to appear as Dante in this episode.
The stalker case JJ discusses with Reid occurred during the first season in an episode titled "Somebody's Watching."
JJ: You remember Detective Owen Kim?
Hotchner: From the stalker case?
JJ: Yeah. You remember that case, don't you, Spence?
Reid: I do remember that case.
JJ: Yeah, you ever talk to that...um...What, Lila?...anymore?
Reid: You know, I think we should probably focus on this case right now. It's a little more pertinent.
JJ: Cullen. The vampire family from Twilight.
Reid: What's Twilight?
Prentiss: Well, if you want to look into a young girl's life today, you have to access her MySpace, Facebook, and Twitter accounts. (dials phone) I'll call the sexiest hacker on the planet.
Reid: "In all the darkest pages of the malign supernatural, there is no more terrible tradition than that of the vampire - a pariah even among demons." Writer Montague Summers.
Prentiss: Writer Cyril Connolly said, "Better to write for yourself and have no public than to write for the public and have no self."
The song heard in the first scene at the concert was "Love Will Tear Us Apart" by Joy Division. The songs heard during the record release party are "Can You Hear Me" and "Evil Eye" by The Lions.
Reid: That's why I stick to Beethoven. There's no chance of guilt by association.
Prentiss: Well yeah? Have you ever seen a movie called A Clockwork Orange?
Prentiss is referring to the 1971 Stanley Kubrick film based on the Anthony Burgess novel which detailed the exploits of a psychopathic young man and his later programming by the government. Both parts of his life prominently featured Beethoven's Symphony No. 9 in D Minor Op. 125.
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