Vance, after noting the disposition of the furniture, turned his gaze upon the old-fashioned crystal chandelier.
“Were those the lights that were on when you found your sister last night, Mr. Greene?” he asked casually.
The other nodded with surly annoyance.
“And where, may I ask, is the switch?”
“Behind the end of that cabinet.” Greene indifferently indicated a highly elaborated armoire near the door.
“Invisible—eh, what?” Vance strolled to the armoire and looked behind it. “An amazin’ burglar!” Then he went up to Markham and spoke to him in a low voice.
After a moment Markham nodded.
“Greene,” he said, “I wish you’d go to your room and lie down on the bed just as you were last night when you heard the shot. Then, when I tap on the wall, get up and do everything you did last night—in just the way you did it. I want to time you.”
Plan of Julia’s bedroom.