Then a sudden turn of thought carried his mind to the subject of miracles, apparitions, ghosts, and mathematical impossibilities such as squaring the circle and doubling the cube--and to his amazement he found that the impossible of yesterday had become the possible--nay, the almost absurdly obvious of to-night.
He went on thinking and wondering until he began to half-believe that he was dreaming again, so he got up and switched on the electric light.
Then he turned involuntarily towards the wardrobe, which, as usual, had a long mirror running down the middle of it.

To his amazement he did not see himself reflected in it.

The mirror seemed to have vanished, and in its place was a window looking into his study.
He saw the mummy-case leaning up against the wall, but it was empty.

In front of it stood a man and a woman.

Both were plainly, almost meanly, dressed; the man in a tightly-buttoned black frock-coat and baggy grey trousers; the woman in a plain gown of dark stuff, and a shawl which was draped round her head and shoulders in somewhat Eastern fashion.
He could see their faces distinctly in profile.