The concierge was closing the house for the night when Ganimard presented himself.
“Did you see him?”
“Yes,” replied the concierge, “I was putting out the gas on the landing when he closed and bolted his door.”
“Is there any person with him?”
“No; he has no servant. He never eats here.”
“Is there a servants’ stairway?”
“No.”
Ganimard said to Sholmes:
“I had better stand at the door of his room while you go for the commissary of police in the rue Demours.”
“And if he should escape during that time?” said Sholmes.