But that weird whispering, coming as it did from an undiscovered source, was inhuman and utterly uncanny.
Was it possible that her ears had deceived her?
Was it one of the omens believed in by the superstitious?
The wall whence the voices appeared to emanate was, she knew, about seven feet thick--an outer wall of the old keep.

She was aware of this because in one of the folio tomes in the library was a picture of the castle as it appeared in 1510, taken from some manuscript of that period preserved in the British Museum.

She, who had explored the ruins dozens of times, knew well that at the point where she was standing there could be no place of concealment.

Beyond that wall, the hill, covered with bushes and brushwood, descended sheer for three hundred feet or so to the bottom of the glen.

Had the voices sounded from one or other of the half-choked chambers which remained more or less intact she would not have been so puzzled; but, as it was, the weird whisperings seemed to come forth from space.