The man appears to have been robbed.

There was nothing whatever on him--but this bit of torn paper, which was found in a hole in the lining of his waistcoat pocket.

It's got your name and address on it, Mr.Breton.

See ?" Ronald Breton took the scrap of paper and looked at it with knitted brows.
"By Jove!" he muttered.

"So it has; that's queer.