He was feeling all this dimly, as he drove from the station, on his last visit; he was feeling it still as he alighted at the door of his friend Mr. Johnstone Thomson, W.S., with whom he was to stay.  A hearty welcome, a face not altogether changed, a few words that sounded of old days, a laugh provoked and shared, a glimpse in passing of the snowy cloth and bright decanters and the Piranesis on the dining-room wall, brought him to his bed-room with a somewhat lightened cheer, and when he and Mr. Thomson sat down a few minutes later, cheek by jowl, and pledged the past in a preliminary bumper, he was already almost consoled, he had already almost forgiven himself his two unpardonable errors, that he should ever have left his native city, or ever returned to it.

‘I have something quite in your way,’ said Mr. Thomson.  ’I wished to do honour to your arrival; because, my dear fellow, it is my own youth that comes back along with you; in a very tattered and withered state, to be sure, but—­well!—­all that’s left of it.’

‘A great deal better than nothing,’ said the editor.  ’But what is this which is quite in my way?’

‘I was coming to that,’ said Mr. Thomson:  ’Fate has put it in my power to honour your arrival with something really original by way of dessert.  A mystery.’

‘A mystery?’ I repeated.

‘Yes,’ said his friend, ’a mystery.  It may prove to be nothing, and it may prove to be a great deal.  But in the meanwhile it is truly mysterious, no eye having looked on it for near a hundred years; it is highly genteel, for it treats of a titled family; and it ought to be melodramatic, for (according to the superscription) it is concerned with death.’

’I think I rarely heard a more obscure or a more promising annunciation,’ the other remarked.  ‘But what is It?’

‘You remember my predecessor’s, old Peter M’Brair’s business?’

’I remember him acutely; he could not look at me without a pang of reprobation, and he could not feel the pang without betraying it.  He was to me a man of a great historical interest, but the interest was not returned.’

‘Ah well, we go beyond him,’ said Mr. Thomson.  ’I daresay old Peter knew as little about this as I do.  You see, I succeeded to a prodigious accumulation of old law-papers and old tin boxes, some of them of Peter’s hoarding, some of his father’s, John, first of the dynasty, a great man in his day.  Among other collections were all the papers of the Durrisdeers.’

‘The Durrisdeers!’ cried I.  ’My dear fellow, these may be of the greatest interest.  One of them was out in the ’45; one had some strange passages with the devil—­you will find a note of it in Law’s Memorials, I think; and there was an unexplained tragedy, I know not what, much later, about a hundred years ago—­’

‘More than a hundred years ago,’ said Mr. Thomson.  ‘In 1783.’

‘How do you know that?  I mean some death.’