Season 4

“I once dated a guy who washed his car more than he washed his hair.”

— Dan Dworkin, Jay Beattie, Jennifer Jareau, A. J. Cook, imdb.com

“Sometimes there are no words, no clever quotes to neatly sum up what's happened that day. Sometimes you do everything right, everything exactly right, and still you feel like you failed. Did it need to end that way? Could something have been done to prevent the tragedy in the first place? Eighty-nin…”

— Edward Allen Bernero, Aaron Hotchner, Thomas Gibson, imdb.com

“I think, deep down, we're all capable of unspeakable things. Where it starts or what you call it, I don't know.”

— Chris Mundy, Aaron Hotchner, Thomas Gibson, imdb.com

“I don't know how to do this. I can't stop thinking about Henry. He goes for a walk almost every single day at Potomac Park. What type of mother am I if I don't at least call and tell him to stay home?”

— Oanh Ly, Jennifer Jareau, A. J. Cook, imdb.com

“[about a serial killer] He sure likes his blondes. Not a good date, though—too stabby.”

— Simon Mirren, imdb.com

“Narcissistic killers need other people to recognize their power. That's why they contact the media.”

— Andrew Wilder, David Rossi, Joe Mantegna, imdb.com

“You told Danny to watch his temper. What else did you worry about? Danny said you had a puppy, but he died. Your son is ill, and he needs help. The truth is, the only thing Danny isn't capable of is remorse. He feels nothing. The son you were trying to protect...is a sociopath.”

— Debra J. Fisher, Erica Messer, imdb.com

“Yeah, just because you delete your history, it doesn't mean all your dirty cyber laundry isn't hanging out there for me to find on your hard drive. Rookie mistake!”

— Debra J. Fisher, Erica Messer, Penelope Garcia, Kirsten Vangsness, imdb.com

“Dr. Spencer Reid: Female serial killers are a fascinating field. We don't have much information on them, but what we do know involves throwing the rules completely out the window. Signature, for instance. They don't torture or take trophies. Derek Morgan: Because there's no sexual gratification when…”

— Oanh Ly, imdb.com

“Impersonal killers are like drug addicts. The first time gives them the ultimate high, and after that, no high is as good. Unfortunately, the addict doesn't know that. He will chase that high to the gates of insanity and death. By now, killing is all our unsub thinks about. He's set up the exact sam…”

— Andrew Wilder, Aaron Hotchner, Thomas Gibson, imdb.com

“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.”

— Oanh Ly, Jennifer Jareau, A. J. Cook, imdb.com

“A colleague of mine asked me the other day how my son was enjoying the Christmas present he got from him and I had to make up an answer, because I didn't know.”

— Mark Bruner, Aaron Hotchner, Thomas Gibson, imdb.com

“Hope's one thing. False hope is something else.”

— Dan Dworkin, Jay Beattie, imdb.com

“Being in a gang shortens your life expectancy, so it's no big surprise when a gangbanger ends up dead.”

— Holly Harold, Lt. Evans, Mark Pellegrino, imdb.com

“Aaron Hotchner: Don't you have something better to do? Derek Morgan: Than to annoy you for three hours? Hell no.”

— Simon Mirren, Aaron Hotchner, Thomas Gibson, imdb.com

“Harming a person weaker than you doesn't take any special ability.”

— Edward Allen Bernero, Derek Morgan, Shemar Moore, imdb.com

“Jordan Todd: So many cases. How do you determine which ones get priority? Jennifer 'JJ' Jareau: Uh...basically murder triage. I look for cases where the threat of losing another life is most imminent.”

— Dan Dworkin, Jay Beattie, Jennifer Jareau, A. J. Cook, imdb.com

“If you get close to him, you won't miss him. He will smell like a combination of human filth and paint thinner.”

— Oanh Ly, Emily Prentiss, Paget Brewster, imdb.com

“Maybe you've got to sit with the past before you can walk away from it.”

— Dan Dworkin, Jay Beattie, Sheriff Merrill Dobson, Patrick St. Esprit, imdb.com

“I never have any normal fans.”

— Edward Allen Bernero, Dr. Spencer Reid, Matthew Gray Gubler, imdb.com