Mac: (about all the calls he's been getting) Every five minutes it's someone else. Half the brass wants me working the cabdriver serial.
Flack: But you caught a murder at an elite prep school whose alumni contribute half the mayor's campaign funds.
Mac: Not to mention Deputy Inspector Gerrard's daughter is a student there. Until we catch this cabdriver, my phone's not gonna stop ringing.

Mac: (about his father) He spent the last eight months in bed on a feeding tube. Eventually, the medicine didn't do anything for the pain, so one day, he asked me...he begged me to end it for him. I couldn't do it.
Hawkes: You made the right choice.
[Mac looks unsure]

Mac: (about Richard Lawson) If this guy's a successful real-estate agent, what's he doing breaking into Sam Harding's penthouse?
Stella: Well, before he died, Harding set up a trust to take care of his home, keep it empty after his death. Nobody was allowed to go inside, not even the building's super or maintenance man.
Mac: He wanted to hide the fact that he murdered Walter Jones and left him there to rot.
Stella: His secret and Jones' body would've remained undiscovered, except this week the rule against perpetuities went into effect.
Mac: That stops dead people from owning property forever.
Stella: Right, which means the penthouse was just about to be put up for auction by the state.

Mac: (about the auction) Anyone hear a gunshot?
Flack: Everyone I spoke to said this room was in a feeding frenzy. The only thing they heard was the sound of some rich guy getting ready to dump six-hundred large on a necklace.
Hawkes: On a piece of jewelry?
Mac: Guess some people are recession-proof.

Mac: (about the human traffickers) They get them high, then later depress them, make them passive so they can't fight back, suppress their appetites so they don't have to feed them much. The ecstasy makes them thirsty they want more water which probably laced with yet another drug.

Mac: (about the missing flash-drive) I didn't take anything.
Agent Walsh: Yeah. Well, a word to the wise, Detective. Before you use that weapon of yours to start taking pot-shots at politicians, better make damn sure there isn't another one pointed right at your head.

Mac: (about the picture of Eckhart and his wife) So what are we looking at?
Hawkes: Manhattanhenge.
Stella: Manhattan- what?
Hawkes: It's a biannual phenomenon in which the rising or setting sun aligns perfectly with the east-west grid of Manhattan's streets. Sort of a Stonehenge-meets-concrete-and-hot-dog-carts kind of thing.

Mac: (Checking out a postcard) It's blank.
Adam: Well, that's why I swabbed the stamp adhesive for DNA.

Mac: (comes to, tied to a chair with lasers and guns pointed at him)
Drew Bedford: Mac Taylor. The Mac Taylor. Phew. You know, it's funny, but you don't look like a hero.
Mac: Andy. I don't know what you...
Drew Bedford: Shh, shh, shh. Whatever you do, don't move. You see that gun? The slightest movement puts a bullet right between your eyes. Of course, freezing is something that comes naturally to you, isn't it, Mac? Something the public doesn't know about its hero cop, but my dead brother knows all too well.
Mac: For God's sakes, Andy, I was just a kid.
Drew Bedford: Yeah, well, you were old enough. All you had to do was pull the trigger. You know, playing with your crack CSI team, it's been, it's been fun. I gotta tell you, man, that Stella, she's just... She's smart. She never quite trusted me. Can see how she'd be an asset to you. Be a shame to see her die. You see, whoever comes through that door is gonna take a bullet. And I'm sure Stella and company are working on finding out where you are, as we speak.

Mac: (enters his office to see Stella and Lindsay waiting for him) Something wrong?
Stella: Lindsay's gonna take off for a little while.
Mac: When?
Lindsay: I leave tomorrow for Montana. A couple of months ago I got a call from the Bozeman's prosecutors office. They apprehend a suspect who was wanted in a multiple homicide ten years ago. Four girls. They were uh... they were friends of mine. I was the only witness.
Mac: And the only survivor as I remember.
Stella: They want her to testify.
Lindsay: I still see their faces. My friends faces. The mothers' faces... I don't know what I'm more scared of. Standing in front of the monster who did this... or seeing those faces. (she gets up as Stella gives her a hug)
Stella: Hey, you take care of youself, kiddo.
Lindsay: Thanks.
Mac: (gives Lindsay a hug) You're tough, Lindsay. You'll pull through this.

Mac: (from behind a pillar, shouting to Suspect X) Who are you?
Suspect X: (reloading her gun) Anyone you want me to be, detective. Friend. Lover. Fantasy. Nightmare. Take your pick.
Mac: Based on the amount of blood leaving your body from that hole I put in your chest, I'll go with dead.
Suspect X: That's not on the list.
Mac: This is all just a game, isn't it? Tell me, what goes through your mind when you end a life.
Suspect X: Besides playing God?
Mac: You don't have much time. Give me something.
Suspect X: A confession? Pulling the trigger is like taking a deep breath of fresh air. Seeing that last little speck of life in their eyes, then when it fades, I don't know I believe they're going to a better place. (closes her eyes as she dies)

Mac: (looking around the work firm) Nice place, Dobson, looks like your father's doing quite well for himself.
Clay Dobson: Detective Taylor, I was just about to send you a fruit basket. You're the reason I'm out of jail, indirectly, of course. If you're looking for an architect, I think we might be a little out of your price range.

Mac: (Looking at an internet profile that Jo and Lindsay have created for him) What is this?
Lindsay: It's your profile page, Mac. It's all part of the investigation.
Mac: (Confused) Okay.

Mac: (looking at his face) Where'd you get that bruise?
Bryce Aldicott/Mad Hatter: (almost laughing) Oh, this. Few nights ago. Mad party. Mad.
Danny: Apparently the party's, uh, going on 24/7 in your head.
Bryce Aldicott/Mad Hatter: I can't explain myself, I'm afraid, sir, because I'm not myself, you see.
Mac Taylor: Yeah, well, whoever you are, you have the right to remain silent.

Mac: (Reading a caption) 'Savor the victory now 'cause you'll be dead by morning.' That's more than a picture, that's a death threat.
Aaron Collins: I just wanted him to lie awake at night, dreading the sunrise, the same way I have, every day, since I was 17 years old.