If anyone has a problem with you being here, they can take it up with me.

Marcus [to Joan]

What you did to Watson, it jeopardized everything.

Sherlock [to Gregson]

The shooting victim is my friend. I wanted to talk to you myself. I wanted to thank you.

Marcus [to Trumaine]

Sherlock: I went to an Army surplus store and got us a couple of cots.
Joan: New or used?
Sherlock: Does it matter?

MS, the gift that keeps on giving.

Paige [to Joan]

Our suspect pool is huge.

Sherlock [to Joan]

Kitty: So when are you going to tell Sherlock?
Joan: Tell him what?
Kitty: That you aren't happy in London.

Now we've got muggers dousing people for phones and handbags.

Sherlock

Joan: That's (sulfuric acid) one way to get rid of fingerprints.
Sherlock: I'd call it an abundance of caution.

Ruby: My father used to host orgies here for his decrepit friends. Think "Eyes Wide Shut" but with more ear hair.
Sherlock: That would explain some of the smells.

If we go another day without an arrest, they'll get Elton John to rewrite the lyrics to "Candle in the Wind" again.

Jones

Sherlock: You seem troubled that someone's invaded your privacy.
Casey: I get it. It's quite rich because I'm a pap(arazzi), right?

Elementary Quotes

Sherlock: He turned the screw
Joan: So-to-speak

Stabbed in the chest and incinerated. Did the killer also throw him off a roof?

Sherlock