"I would not say a word unless I was sure that you were guilty."
"Even then, why should you speak?"
"There's a conscience, and—"
"Nonsense! What business is it of yours? Now look here; you think a good deal more about money than you do about your conscience. I've got money, and I'm willing to pay well to keep out of trouble."
"But I don't want to get into any."
"You won't. All you've got to do is to keep still."
"Keep still about what, sir?"
"This sleep-walking to-night."
"I won't say a word, unless—"
Nick hesitated. He wished to give the doctor the impression that his innocence was by no means clear, and that the idea of shielding a murderer was not to be entertained.