"You say you tried this door when you first—entered the room?" he asked.
"Yes, Monsieur," said Piquette promptly. "We thought that Madame Horton might be inside. But finding it locked we did not go in."
The policeman drew back muttering.
"Most extraordinary!" he said. "There is a door from these other rooms into the hallway outside?"
"Yes."
The policeman pushed a way through the crowd and tried the door from the outside. It, too, was locked.
He turned to the crowd.
"No one came out of this door?"
"No one, no one, Monsieur."
"And this other door?" indicating the hall room.