Silence is never an admission. We learn that in law school.

You’re full of it. It’s not against the law to run.”
“Yes it is. Especially for us.

An alibi is only as good as its details.

I get it,' said the prisoner. 'Good Cop, Bad Cop, eh?'
If you like.' said Vimes. 'But we're a bit short staffed here, so if I give you a cigarette would you mind kicking yourself in the teeth?

No! Please! I'll tell you whatever you want to know!" the man yelled.
"Really?" said Vimes. "What's the orbital velocity of the moon?"
"What?"
"Oh, you'd like something simpler?

Look innocent. Have hope.”
“Okay.”
“And remember…”
“What?”
“Even O.J. Simpson was acquitted.