Flack: I gotta know, you're a career criminal, you know how this works so what on Earth possessed you to bring your kidnapping victim back to your mother's house?
Jake Williams: You saw my mother, she's scarier than we are.

Flack: I have to ask. Two years nurturing someone back to health, getting to know them, watching them grow. How do you rationalize killing them?
Debbie Fallon: They're a cancer. Living in the street like dogs. Begging for change.
Grace Chandler: Leaving their feces and stench in boxes in doorways.
Debbie Fallon: How long do you think they would have lasted before you or some other cop found them dead? We took them off the street. We gave them two more good years.
Grace Chandler: Two years living in a Park Avenue apartment building. Wearing the best designer clothes and expensive jewelry. We gave them things, things they never could have imagined. Having a life they were never supposed to live. We gave them two more years. Two years they would have never had.
Flack: And the payment for that was their lives?

Flack: I hear you have an inspector in-house.
Stella: Yeah, I think, at some point, she worked with Mac. They were both up for his job.
Flack: He doesn't mind her looking over his shoulder?
Stella: Actually, it's weird, he seems to be fine with it.
Flack: Is she pretty? This inspector? (she gives him a look as he smiles) I'm just sayin'.

Flack: I heard a rumour you found our intern, Ryan Elliot.
Mac: He's on his way to autopsy now.
Flack: Did you, uh, happen to find anything else?
Mac: You wanna gimme a hint as to what exactly you're looking for, Flack?
Flack: An igloo cooler with a human liver inside it.

Flack: I know times are tough, but it doesn't make sense for anyone in the game to rob our vics for fake cash.

Flack: I really wish I wasn't a part of this.
Stella: Well, Mac wants to make sure you are.
Flack: He obviously enjoys seeing me nail a friend.

Flack: I wish I knew what to say.
Cliff Angell: You can tell me she didn't die protecting that scumbag murderer.
Flack: No, I can't. But I can tell you that she did the job the best, she could no matter what the assignment and, uh... that's who she was.
Cliff Angell: She was too damn brave for her own good.
Flack: From what I hear, she took after her old man.
Season 6

Flack: I'll start whacking the bushes, see if anyone was itching for a death match with our fighter outside of the cage.

Flack: I'm not used to lookin' down on the barrel of an AK-47, but I'll be all right.

Flack: I'm sure this isn't the only cap with Derek Jeter's number on it floating around the city. Doesn't prove anything.
Stella: Well, it proves that Nicky was in the bank with a gun and a note.
Flack: Come on, Stella. Troy Castro robbed that bank and the only reason he hasn't confessed to it is 'cause he's dead.

Flack: I'm telling you, Mac, she killed Rachel Camden.
Mac: What's your rush to put this woman away?
Flack: You saw her. What's your rush not to?
Mac: In all my years of doing this, there's one thing I've learned. Sometimes the slam dunks are the most deceiving.

Flack: I'm thinking our vic's wallet and jewelry were on someone's Christmas list.
Mac: Along with his life.

Flack: If a guy works up top, answer me one question. What was Pete Riggs doing down there, 'cause he wasn't working.

Flack: If you could go back to that moment, just you and him in that apartment, would you do it again? Would you stick the knife in his chest?
Deborah Carter: (reliving the stabbing & not caring) All 17 times. Regret's a waste of time, Detective.
Flack: Right. You can't change the past. Stand up, turn around. No matter how okay you think you are, when you close your eyes at night, it's gonna haunt you. (as he cuffs her)

Flack: Jacob Paul Williams. Priors for a little bit of everything. Armed robbery, assault with a deadly weapon... do you realize how screwed you are?