He had no friends over here, no interests, no ties of any sort.

He was abroad for the first time of his life.

He regarded foreign countries and people simply with the tolerant curiosity of the untravelled Britisher.

He appears in Paris for one night and disappears, and forthwith all the genius of French espionage seems to have combined to cover up his traces.

It is the same with his sister, only as she came afterwards it was evidently on his account that she also is drawn into the mystery.