"I think they brighten life a good deal; but of course there are people who do not like them--the middle-classes." "Yes, yes, they're all very well in their place; but to live with they must be trying," said Guerchard quickly.
He went on to question the Duke closely and at length about the household of M.Gournay-Martin, saying that Arsene Lupin worked with the largest gang a burglar had ever captained, and it was any odds that he had introduced one, if not more, of that gang into it.

Moreover, in the case of a big affair like this, Lupin himself often played two or three parts under as many disguises.
"If he was Charolais, I don't see how he could be one of M.
Gournay-Martin's household, too," said the Duke in some perplexity.
"I don't say that he WAS Charolais," said Guerchard.

"It is quite a moot point.

On the whole, I'm inclined to think that he was not.

The theft of the motor-cars was a job for a subordinate.