Hidden from them by a low thorn-bush, I stood in silent stupefaction as they passed by. That it was no chimera of the imagination was proved by the fact that their footsteps sounded upon the path, and just as they had passed I heard Courtenay address his wife by name. The transformation of her countenance from the ineffable picture of grief and sorrow to the calm, sweet expression of content had been marvellous, to say the least--an event stranger, indeed, than any I had ever before witnessed. In the wild writings of the old romancers the dead have sometimes been resuscitated, but never in this workaday world of ours. There is a finality in death that is decisive. Yet, as I here write these lines, I stake my professional reputation that the man I saw was the same whom I had seen dead in that upper room in Kew. I knew his gait, his cough, and his countenance too well to mistake his identity. That night's adventure was certainly the most startling, and at the same time the most curious, that ever befel a man. Thus I became seized with curiosity, and at risk of detection crept forth from my hiding-place and looked out after them. To betray my presence would be to bar from myself any chance of learning the secret of it all; therefore I was compelled to exercise the greatest caution. Mary mourned the loss of her husband towards the world, and yet met him in secret at night--wandering with him by that solitary bye-path along which no villager ever passed after dark, and lovers avoided because of the popular tradition that a certain unfortunate Lady of the Manor of a century ago "walked" there. In the fact of the mourning so well feigned I detected the concealment of some remarkable secret. The situation was, without doubt, an extraordinary one. The man upon whose body I had made a post-mortem examination was alive and well, walking with his wife, although for months before his assassination he had been a bed-ridden invalid. Such a thing was startling, incredible! Little wonder was it that at first I could scarce believe my own eyes. Only when I looked full into his face and recognised his features, with all their senile peculiarities, did the amazing truth become impressed upon me. Around the bend in the river I stole stealthily after them, in order to watch their movements, trying to catch their conversation, although, unfortunately, it was in too low an undertone. He never released her arm or changed his affectionate attitude towards her, but appeared to be relating to her some long and interesting chain of events to which she listened with rapt attention. Along the river's edge, out in the open moonlight, it was difficult to follow them without risk of observation. Now and then the elder-bushes and drooping willows afforded cover beneath their deep shadow, but in places where the river wound through the open water-meadows my presence might at any moment be detected. Therefore the utmost ingenuity and caution were necessary.