Charles slipped his table-napkin into its ring, and got up. "I can hardly improve on the favourite dictum of Mr. Flinders," he said with dignity. "You don't need to tell me how to act."

"Well, what are you going to do?" Margaret asked.

"Write a letter," Charles answered, and went out.

Peter presently ran him to earth in the small study at the front of the house. "Why the mystery?" he inquired. "Are you getting an inquiry agent on to James Fripp?"

"I am," Charles said, directing the envelope. "There's a chap I've once or twice had dealings with who'll do the job very well."

"What about Strange? Think it's worth while setting your sleuth on him?"

"I did consider it, but I think not. As far as Fripp's concerned it ought to be fairly easy, since I've got his card. Brown can get on to this firm he apparently works for. But regarding Strange we've nothing to give Brown to start on. If he's a wrong 'un it's highly unlikely that Strange is his real name. The man we want now is friend Flinders."

Peter groaned. "Do we? Why?"

"To find out a little more concerning M. Louis Duval. I'm rather surprised Flinders hasn't mentioned him."

But the reason for this omission was soon forthcoming. Flinders, when they visited him in his cottage later that afternoon, said with considerable hauteur that they had only asked him questions about the gentry. "And that Dooval," he added, "ain't gentry, besides being a furriner. You've only got to look at the place he lives in. Pig-sty ain't in it. What's more, he does for himself. Ah, and in more ways than one!" He permitted himself to give vent to a hoarse crack of laughter at his own wit. "But what I meant was, he doesn't have no one up to clean the place for hirn, nor cook his breakfast." He shook his head. "He's a disgrace to the neighbourhood, that's what he is. He goes round painting them pictures what no one can make 'ead nor tail of as I ever heard on, and half the time he's drunk as a lord. Getting worse, he is. Why, I remember when he first come here, barring the fact of his being a furriner, there wasn't really much you could take exception to about him. Very quiet, he used to be, and you never saw him in drink more'n was respectable, though there are some as say that it ain't only drink as is his trouble."