"Frankly, I was too frightened to do anything. I just lay still with my
heart beating horribly, and presently they passed on, and I heard them
no more."

"Was your door locked?"

"No." She laughed nervously. "But it has been locked every night since
then!"

"And these sounds were repeated on other nights?"

"Yes, I have often heard them, Mr. Knox. What makes it so strange is
that all the servants sleep out in the west wing, as you know, and
Pedro locks the communicating door every night before retiring."

"It is certainly strange," I muttered.

"It is horrible," declared the girl, almost in a whisper. "For what can
it mean except that there is someone in Cray's Folly who is never seen
during the daytime?"

"But that is incredible."

"It is not so incredible in a big house like this. Besides, what other
explanation can there be?"

"There must be one," I said, reassuringly. "Have you spoken of this to
Madame de Staemer?"

"Yes."