"He thinks you know where Mountjoy is." "Why should I know ?" "Or at any rate that you have seen him since any of us.

He professes not to care a straw for Mountjoy or his whereabouts, and declares himself under obligation to those who have contrived his departure.
Nevertheless, he is curious." "What have I to do with Mountjoy Scarborough ?" "That's just the question.

What have you to do with him?
He suggests that there have been words between you as to Florence, which has caused Mountjoy to vanish.

I don't profess to explain anything beyond that,--nor, indeed, do I profess to agree with my father.

But the odd thing is that Prodgers, the policeman, has the same thing running in his head." "Because I have shown some anxiety about your brother in Scotland Yard." "No doubt; Prodgers says that you've shown more anxiety than was to be expected from a mere acquaintance.