Mac: You know you can't be doing that. You shouldn't even be within ten feet of that evidence.
Jo: John Curtis is posting bail as we speak. I can't sit back and watch this case fall apart.
Mac: The case isn't yours, Jo. It's Lindsay's. She'll be the one to go back over the evidence and you should get some distance.
Jo: You know John Curtis is not just another bad guy to me. I can't pretend this is business as usual.
Mac: Yeah, I get that, it's personal. All the more reason why you should step away.

Mac: You made up a story implying I was the source.
Reed: Look, what do you want me to say? I am getting 20,000 hits a day. People like to read my blog.
Mac: Which is exactly why you should be more careful what you say.
Reed: We don't have time for careful, Mac. We have a serial killer to catch.
Mac: No, Reed. I have a serial killer to catch. You just want a headline. But I get it. So out of love and respect for your mother I'll give you an exclusive. You ready? Watch who you mess with.
Reed: Is that a threat from you or from the killer?
Mac: Both.

Mac: You on break?
Sheldon Hawkes: I'm just taking five minutes to eat. That's okay, isn't it?
Mac: Eating is frowned upon, Hawkes. [Hawkes moves to put everything away] Hey, I'm kidding. Relax.

Mac: You want to act stupid? Break the law? Fine, go ahead, do it. Just do us all favor, leave the innocent people out of it.

Mac: You're a fine CSI, Stella. I can honestly say, I wouldn't do this job without you.
Stella: Yes, you would. You just wouldn't be as good.
Mac: [smiles] Maybe.

Mac: You're not a CSI on this one, Stella. You're a victim.

Mac: You're not a doctor, you're a murderer with a medical degree.

Mac: Your little visit to Mr. Curtis wasn't a very good idea. I hope you got whatever it was you had to say off your chest.
Jo: I did. Thanks for not making a big deal about it.

Mac: Your son was minutes away from testifying against you in the grand jury. I swear to God, if you had something to do with this, you better hope that somebody other than me comes to arrest your ass.
Dunbrook: (venomously) You're a piece of work, Taylor. My son was abducted at gunpoint and now you're threatening me. It's nice to know the NYPD has a victim's best interest at heart.

Mac:Stay with me, Don. Stay with me.

Maka: [about Hannah Bloom] Gives a whole new meaning to the term 'cold feet'.
Danny: If I said something like that, you'd call me insensitive.
Maka: No, I'd ask if you wanted to get a drink later. I'm attracted to a man with a dark sense of humor.
Mac: Do you two want to be alone? I'll just drag the body outside.

Maka: Never broke an arm off of your GI Joe?
Danny: Yeah, but I did it on purpose, casualty of war.

Male tenant: No, I didn't hear anything unusual. What happened?
Flack: A guy was shot down the hall.
Male tenant: Oh..yeah..I heard that.
Flack: Did you call 9-1-1?
Male tenant: No. Why?

Marina Morton: Isabel Vaughn was a ungrateful little bitch. After all I did for her she though she could just walk away? We had a contract and it was legally binding.
Mac: So is a murder conviction.

Marty Bosch: I think I killed somebody last night.
Flack: You're telling me you woke up doused in gasoline, covered in blood and you don't know how it happened?
Marty Bosch: I was drunk.
Flack: Yeah, Marty, I've had my fair share of rough nights, yet I think I'd remember taking a bath in somebody else's blood.