"Who opened it this morning?"
"I did. I knew that the key would be in Madame's pocket."
"And it was?"
"Yes. She must have locked the door as usual, and then have gone to put the light out in her sitting-room before going upstairs."
"Was that before eleven?"
"I can't say. I did not leave my room after ten. But Margery may have seen some one as she went up to her bedroom when she left me."
"I'll question the girl," said Quex, and entered the sitting-room.
It was of no great size, with one window, which looked out onto the square. This was locked, and, even if it had not been, no one could have climbed in, as Quex saw that the area was below. "And Madame chained the area gate every night with her own hands," explained Miss Bull, who was watching him.
The inspector turned suddenly toward her. "It seems to me that the deceased was over-cautious. Was she afraid?"
"I think she was," admitted Miss Bull. "She had a habit of looking over her shoulder, and, as I have stated, was particular as to bolts and bars. But she was a secretive woman, and never said anything to me about her fears, if she had any."