“Twice a day, sir,” Stimson admitted. “In the morning to raise the shades and lower the windows; in the evening during dinner to lock the windows and lower the shades. Tonight the sergeant told me to leave them as they were.”

“Stimson,” snapped Bernard suddenly, “who killed Mr. Harrison?”

The butler hesitated an instant, then replied calmly, without raising his voice: “I don’t know, Mr. Bernard.”

“But you suspect somebody!”

“No, sir. I have no reason to suspect anyone—no theory of the crime.” About Stimson’s amendment there seemed a faint trace of irony.

“I wonder!”

“I wonder, too, sir!”

“What do you mean by that?” Bernard growled.

“Why, I wonder who killed Mr. Harrison!” said Stimson in surprise.