Rossi: (discussing Beth with Hotch) Is she cute?
Hotchner: Yes, she is, but I need to be focused on my training. I don't need to be distracted.
Rossi: Yes, you should be. Distracted is good. What's her name?
Rossi: I like it. And you know what they say about riding a bicycle.
Reid: Who's getting a bicycle?
Reid: You know, statistically, widowed men start dating much faster than females, but Hotch is refuting the data. It's been two years and 19 days.
Garcia: Venus has aligned with Mars, which means love is in the air and maybe we will have weekends off.
Morgan: (sees Hotch and clears throat to warn Garcia)
Garcia: What? Is he standing there? He's standing there, isn't he?
Hotchner: Hello, Garcia.
Prentiss: We saw the bodies, all of them have stress breaks in the same places.
Rossi: That's consistent with years of fight training.
Hotchner: Fight training. You think he's a boxer?
Rossi: It makes sense. A fighter would have the endurance it takes to commit this kind of overkill on this many people with a pipe or with his hands.
Morgan: It would explain why at the first crime scene he lined the bodies up in the corner, like in the ring.
Hotchner: It makes sense about the bloodlust, but what triggered the killings?
Morgan: Penelope, how's the greatest computer tech this side of the Mississippi?
Garcia: Floats like a butterfly, stings like a bee, Garcia's going to find what only her screens can see, what do you need?
Hotchner: "Everybody wants to go to heaven, but no one wants to die." Joe Louis
Hotchner: Hermann Hesse wrote, "People think it is holding on that makes you stronger, but sometimes it's letting go."
The song heard in this episode was "Turn a Light On" by Kathryn Calder.
The title of this episode was a modification of the boxing term, "sweet science." The change was made because the story was so sad.