Sherlock: What if it wasn't Caroline's life that the killer wanted. What if ...
Joan: It was her dog's.

Do you realize you have a tell when you lie?

Joan [to Sherlock]

You can call off the Ghost hunt, Captain.

Sherlock [to Gregson]

What do you say? Come up with some names together?

Cassie [to Sherlock]

If you really want to be a better person, I could try to help you figure it out.

Sherlock [to Casse]

Making a connection to somebody is rare for you.

to Cassie

Sherlock: Cassie's no Moriarty.
Joan: Not yet.

Cassie: You have trust issues.
Sherlock: You have truth issues.

Heather left her mark on people. She did a lot of good.

Judd [to Sherlock]

Heather was buying clothes for her foster kids when she was gunned down. Doesn't that sound like someone who deserves justice?

Cassie

Cassie: Why do you have to be so mean?
Sherlock: Because I don't think you've said an honest word since 'Hello.'

Someone I care about was murdered. I want to hire you to solve it.

Cassie [to Sherlock and Joan]

Elementary Quotes

Holmes: Why do you suppose you hate your job so much?
Watson: I don't hate my job.
Holmes: You have two alarm clocks. No one with two alarm clocks loves their job. Two alarm clocks mean it's a chore for you to get up in the morning.

Watson: How do you do it, guess things?
Sherlock: I observe and then I deduce.
Watson: How did you know I was a doctor, you said you could tell from my hands.
Sherlock: Hand, singular. It was soft no calluses.
Watson: How did you know my father had an affair?
Sherlock: Google. Not everything is deducible.