Ollie's a magnificent animal, isn't he?

Sherlock

Ollie would make a good canine canary in the coal mine.

Sherlock [to Marcus]

Sherlock: Kind of ironic, a weed-sniffing dog fostered by someone who sells the stuff.
Marcus: I don't know about ironic, but I don't think it's a coincidence.

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]

Elementary Season 7 Episode 9 Quotes

Do you realize you have a tell when you lie?

Joan [to Sherlock]

You can call off the Ghost hunt, Captain.

Sherlock [to Gregson]