David Rossi: I think he went back to relive his crime. When Zoe showed up, she became a victim of opportunity.
Aaron Hotchner: That's the same theory we arrived at on the plane. He strangled her with her own scarf. He didn't plan it, I think she surprised him.
David Rossi: I told her not to stop until she found the answers she was looking for. I didn't think she'd go to a crime scene.
Aaron Hotchner: Her mom said it's something that she does all the time. She probably would have gone anyway.
David Rossi: But it's because of what I said that she was encouraged to go there last night.
Aaron Hotchner: Dave, what are you doing?
David Rossi: She came to me and I dismissed her.
Aaron Hotchner: Try not to personalize it.
David Rossi: I was the last one she talked to before she was murdered. How is this not personal, Aaron?
Eric Ryan Olson: I always knew I'd end up back in prison, just a matter of when. You can come interview me if you want. I read in one of your books that's how you build your behavioral database right? Maybe you can learn something from me. I got a lot of questions myself. I'll be honest with you if you're honest with me. Cause the one thing that you always ask is the one thing that I don't understand: Why? I have no idea why. I see a guy walking down the street with a stupid look on his face and I want to bash him over the head with a bottle. To me that normal. It's weird to me that no one else feels that way. It's all I think about. I can't stop.
David Rossi: [opening quotation, voiceover] "I never teach my pupils, I only attempt to provide the conditions in which they can learn." - Albert Einstein.
David Rossi: [closing quotation, voiceover] Austrian novelist Marie Von Ebner-Eschenbach wrote "In youth, we learn. In age, we understand."
Sheila Hawkes: [finding Rossi at Zoe's grave] I hear you caught him.
David Rossi: We did.
Sheila Hawkes: Is he going to prison?
David Rossi: For the rest of his life.
Sheila Hawkes: It doesn't make me feel better. He's alive, Zoe's not. But she'd be pleased that you caught him.
David Rossi: I hope so.
David Rossi: Why do people want to hear me talk about serial killers? Is it that entertaining?
Jennifer 'JJ' Jareau: There's a public fascination with them.
David Rossi: Sometimes I wonder if my books are doing more harm than good.
Jennifer 'JJ' Jareau: My senior year at Georgetown, I was graduating and I did not have a clue what I was gonna do with my life. And one day, I was in the campus bookstore and you were there. Promoting your... second book? Sat through your whole talk.
David Rossi: You never told me.
Jennifer 'JJ' Jareau: I asked you what it was you were most proud of, and you showed us a picture of a boy from Charleston.
David Rossi: Brent Roberts. A neighbor took him.
Jennifer 'JJ' Jareau: He was found alive. One of the few. That night, I bought your book. Applied to the academy the next fall.
Jennifer 'JJ' Jareau: Victim one, Travis Bartlett, was last seen at a gay bar. He was shot at night in a park. Victim two, Lily Nicks, a thirty-four year old prostitute, her throat was slashed. Victims three and four, June Appleby and Troy Wertsler, were shot in their car at a parking lot outside of a movie theater. And victim five was a twenty-eight year old single woman, Kayla James, killed in her home. She was bound, suffocated with a bag over her head, evidence of rape.
Emily Prentiss: And then the sixth victim was Zoe.
Dr. Spencer Reid: Victimology, weapons used, and C.O.D. are all different. I mean, it's hard to imagine it's even the same unsub.
David Rossi: It can't be a coincidence that Zoe goes to Kayla James' house and gets murdered.
Aaron Hotchner: All right, let's say it is the same killer. Does anybody see a pattern?
Emily Prentiss: Well, maybe. Okay, in the first crime, he shoots the victim. The second crime, he rapes a woman and slashes her throat; that's more personal. And the third crime, he escalates to killing two people, and the fourth, he escalates even more by raping a woman, binding her, and suffocating her.
Aaron Hotchner: So if it is the same unsub, you could argue that there's a progression of violence with every kill.
Dr. Spencer Reid: It could be an anger excitation offender getting more daring with each crime.
Derek Morgan: I think I got something here. Look at this. The slashes in the prostitute's throat, they're all shallow, unsure cuts. The Kayla James crime scene, telephone cord, rope, and duct tape were used. It's like he couldn't decide how to bind her.
Aaron Hotchner: So without a gun, he's sloppy, inexperienced.
Derek Morgan: The young couple shot in the car... that crime scene remind you of anything?
Dr. Spencer Reid: Yeah, they were shot with a .44 Bulldog, just like the Son of Sam used on his victims, which were also young couples in parked cars. It might be nothing, but you're right, there is a parallel there.
Emily Prentiss: With the second victim, it's hard not to think of Jack the Ripper. The obvious similarity being it's a prostitute whose throat was slashed.
Aaron Hotchner: Kayla James was bound, tortured, raped, with a plastic bag over her head, like BTK.
Derek Morgan: What about victim number one?
David Rossi: Garcia, what neighborhood was he found in?
Penelope Garcia: At a park in the Kingsbury Run area.
David Rossi: Zoe reminded me last night that Cleveland's most famous serial killer was the Butcher of Kingsbury Run. He found his victims in gay bars, shot them, and dumped their body there. Travis Bartlett was last seen at a gay bar, and his body was found in Kingsbury Park.
Jennifer 'JJ' Jareau: So these are copycats of famous serial killers?
David Rossi: He's a serial killer studying serial killers.
Aaron Hotchner: See you in Cleveland, Dave.