- Graham Clarke - Reporter
- Katherine Conway - Dorris Archer
- Nate Donaldson - Mac Jones
- Meegan Godfrey - Samantha Rush
- Jonathan Goldstein - Detective John Fordham
- Karen Forest - Norma Renmar
- Sarah Lieving - Lucy Masters
- Stefanie McCall - Reporter #2
- Peggy McClellan - Allison Kittridge
- Kathryn Michelle - Mary Ann
- Tyler Jacob Moore - Brad
- Deborah Puette - Louise Hightower
- Matthew Rocheleau - Scott Weldon
- Reece Rios - Robert Johnson
- Ned Schmidtke - Austin Chapman
- Justin Sintic - Texting Detective
- Ian Vogt - David Caston
- Aaron Hotchner: "The single biggest problem with communication is the illusion that it has taken place." - George Bernard Shaw
- David Rossi: "The Internet is the first thing that humanity has built that humanity doesn't understand, the largest experiment in anarchy that we have ever had." - Eric Schmidt
- When Garcia finds the website where the unsub posted a murder, a video titled "Hellooooooooo Ladies" can be seen, depicting a man in a blonde wig with pigtails. This video was previously seen in the Season Two episode "The Big Game."
- Meegan Godfrey, the actress who portrays Samantha Rush, previously appeared on Criminal Minds, starring in the Season One episode "Charm and Harm" as Nicole Wegener.
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