When Rossi and John Caulfield visit Mary Wilkinson, there is a camera clearly visible on the right-hand side of the screen.
Rossi: I want to show you something. (removes charm bracelet from his pocket and shows it to Caulfield) I carry this wherever I go.
John Caulfield: What, your kids?
Rossi: Indianapolis. Christmas Eve. One of my first cases on the job. Three kids watched their parents get beaten to death. Every year I call to tell them I haven't forgotten, I'm still looking. Last year, not one of them bothered to return my call.
Reid: (about the unsub) He was killing animals - it's clear he was already having murderous impulses and finding this must have made him feel like it was okay, like it was almost his birthright.
Hotchner: You okay?
JJ: If you stop caring, you're jaded. If you care too much, it'll ruin you.
Hotchner: Just know that you did everything you could. Sometimes we get it right with a little luck, and most of the times we don't. That's the job. It's never perfect. It's still better to care.
JJ: You really believe that?
Hotchner: I believe it's never perfect.
Morgan: Who's up for a drink?
Prentiss: Ooo! Who's up for five?
Rossi: Count me in.
Reid: I don't know…
Morgan: Stop with the "I don't know," you're in, kid.
Morgan: Garcia's got something.
Garcia: (over Morgan's phone) Don't worry, it's not contagious.
Hotchner: Ever since we had Jack I always dread it when you bring me a case involving kids.
JJ: Why are you telling me this?
Hotchner: Every case we work, every case we don't work, comes across your desk.
Hotchner: And most of the victims are women, and most of them are about your age. It's okay if you lose it every once in a while. It reminds people that we're human.
JJ: You never lose it.
Hotchner: Maybe I should have.
Rossi: You couldn't have solved that case. Your killer was dead.
John Caulfield: Not to me.
Morgan: Madonna-whore complex. He couldn't touch his pure wife, so he had to find disposable girls.
John Caulfield: Legend around here says I'm crazy.
Rossi: Well, I'm not big on legends.
JJ: Wordsworth wrote, "A simple child, that lightly draws its breath, and feels its life in every limb, what should it know of death?"
Hotchner: The American poet Anne Sexton once wrote, "It doesn't matter who my father was; it matters who I remember he was."
The song in the opening scene was "Where the Devil Don't Stay" by Drive-By Truckers. The unsub played "Honky Tonk Women" by the Rolling Stones, "Skin and Bones" by JET played during the second abduction, and "Decoration Day" by Drive-By Truckers was the song at the end.
Morgan: BTK resurfaced after 27 years.
Dennis Rader killed 10 people between 1974 and 1991, and sent letters to the police after the crimes signed, "BTK," which stood for, "Bind, Torture, Kill." He dropped out of sight for several years and was arrested in 2005 after he resumed sending the letters. He pleaded guilty and is currently serving a life sentence.