"That is too bad. Was she much upset?"

"Yes. The thing is beginning to get on her nerves."

Duvall rose, and placed his tools in the kit.

"Please take me to your daughter's bedroom," he said. Mrs. Morton led the way.

The room was a fairly large one, situated in an ell at the rear of the building. Of its two windows, one, as has already been pointed out, overlooked the court between the apartment building and the house next door. The other faced toward the rear. Duvall placed his kit of tools upon the floor, and began an examination of the room. After a quick glance about, he turned to Mrs. Morton.

"Where was the letter found—the one that did not come through the mails?"

"Here." Mrs. Morton indicated a spot on the floor near the small enameled dressing table that stood against the east wall of the room. Its position was midway between the two windows. It was clear that whoever had entered the room might have done so through either of the windows; at least, the position in which the dressing table stood afforded no indication as to which one it might have been.

"Which of the two windows was open, when you found the letter?" Duvall asked.

Mrs. Morton indicated the one facing the court.

"This one," she said. "Not wide open. Perhaps six or eight inches."