“Yes, yes,” said Lupin, in a low voice, “but it seems to me that the light which I saw shining did not come from here....”
“Where did it come from then?”
“I can’t say.... Is this the drawing-room?”
“No,” replied Gilbert, who was not afraid to speak pretty loudly, “no. By way of precaution, he keeps everything on the first floor, in his bedroom and in the two rooms on either side of it.”
“And where is the staircase?”
“On the right, behind the curtain.”
Lupin moved to the curtain and was drawing the hanging aside when, suddenly, at four steps on the left, a door opened and a head appeared, a pallid man’s head, with terrified eyes.
“Help! Murder!” shouted the man.
And he rushed back into the room.
“It’s Léonard, the valet!” cried Gilbert.