Elementary2012

Sherlock Holmes:
[Arguing about whether or not Bell knows that the detective he's been seeing works for Internal Affairs] Well, say he doesn't. How is it any of our concern?

Dr. Joan Watson:
Are you serious?

Sherlock Holmes:
We're not cops, Watson. For as long as there's been police, there's been police corruption. The bureau might not be popular, but it's utterly necessary.

Dr. Joan Watson:
You just said you surveilled them.

Sherlock Holmes:
Because I feared that they might not approve of our methods. Not because I thought they're inherently evil.