"That window," said Savette. "It is always shut and locked. Now it appears to be open. Wait a moment."
He arose and went to the window. He raised the shade and revealed the sash open from the top. He stared at it in a puzzled manner; then raised both portions of the sash and put his head out into the dark. Satisfied with a brief inspection, he lowered the bottom sash and latched the window. He pulled down the shade, strode across the room, and pressed a buzzer.
Hughes responded half a minute later. The servant looked inquiringly at the physician.
"Did you open that window?" asked Doctor Savette.
"No, sir," replied Hughes. "It was locked when I lowered the shade."
"It was open a few minutes ago," declared Savette, in a reproving tone. "Be more careful after this, Hughes."
The servant left the room, shaking his head. He closed the door behind him. Savette looked at Tremont in a puzzled manner.
"I can't understand that," he said. "I have been in this room all evening. No one could have opened the window from in here. Someone from the outside — with the right kind of implement or—"
Glade Tremont laughed heartily.
"You want the explanation?" he asked. "I'll give it to you. Hughes lied. He forgot to close the window. That's all."