"Yes, sir."
"Who did actually lock the door?"
"Mr. Guest, sir. He gave the key to Dr Raymond at once."
"Did he or you ascertain that the door was locked?"
"Yes, sir, I did," replied Finch instantly.
"And there was no possibility that anyone could have unlocked it with any other key than the one belonging to it?"
"No, sir, none. Sir Arthur had all the locks made different when he built the house."
"I see." Harding made a note in his pocket-book. "Will you now arrange the room exactly as you found it when you first came in after the murder, please?"
"You mean the windows, sir? Everything else is just as it was."
"Yes, the windows."