Greene shrugged his shoulders, but did not answer.
“By the by, Mr. Greene,”—Vance had slipped down in his chair and was staring into space—“you said that when you looked into Miss Julia’s room you saw her in bed. How was that? Did you turn on the light?”
“Why, no!” The man appeared puzzled by the question. “The light was on.”
There was a flutter of interest in Vance’s eyes.
“And how about Miss Ada’s room? Was the light on there also?”
“Yes.”
Vance reached into his pocket, and, drawing out his cigarette-case, carefully and deliberately selected a cigarette. I recognized in the action an evidence of repressed inner excitement.
“So the lights were on in both rooms. Most interestin’.”
Markham, too, recognized the eagerness beneath his apparent indifference, and regarded him expectantly.
“And,” pursued Vance, after lighting his cigarette leisurely, “how long a time would you say elapsed between the two shots?”