Lupin reflected and said:
"Did he command the lot of you?"
"Yes."
"But he had an accomplice, a partner?"
"Oh hush . . . hush . . . !"
The head-waiter's face suddenly expressed the most intense alarm. Lupin noticed the same sort of terror and repulsion which he himself felt when he thought of the murderer.
"Who is he? Have you seen him?"
"Oh, don't let us talk of that one . . . it doesn't do to talk of him."
"Who is he, I'm asking you."
"He is the master . . . the chief. . . . Nobody knows him."