"They were seated on a stone wall that night (lying in the lee of the wall, more likely) when they heard a faint noise approaching, a rush and a jangle and a muffled beat of running hoofs. They peered over the wall in time to see it pass by: a faintly glowing carriage pulled by one or two horses invisible but for the gleam of moonlight off their harness trimmings, with a woman clearly visible inside. They heard the crack of a whip, and as the carriage was passing another dark shape appeared behind it. The shape turned and looked straight at them, and it whined. They were both clear that they had heard the whine. At that point in her story the girl broke down into hysterics, because when the beast turned to look at them, they could clearly see that it was possessed of a single eye, large and glowing, in the centre of its head. The driver of the carriage whistled, and the hound—or whatever it was—loped off, leaving the two lovers to collect what wits they might have, and their clothing, and race for the girl's cottage as if, as the saying goes, all the hounds of hell were after them."

Baring-Gould allowed his eyes to close, and his mouth opened slightly. He was exhausted by his lengthy narrative, but Holmes continued to pore over the map, and I felt sure that if his old friend would benefit by a doctor's attention, Holmes would summon one. Not knowing quite what was called for, I thought I ought at least to comment on what the old man had so laboriously given us.

"I thought the hound was supposed to be leading the carriage, not following," I said weakly.

Holmes replied, "I don't think the displacement of the animal would negate the experience in the minds of the couple, Russell."

I was surprised to see a tiny smile twitch at the corner of Baring-Gould's ancient blue lips, and then astonished when they opened and the old man began to sing, in a baritone that quavered a bit but was true enough, to give forth a tune that was simple, yet eerie.

"My Lady hath a sable coach, with horses two and four,

My Lady hath a black blood-hound, that runneth on before.

My Lady's coach hath nodding plumes, the coachman hath no head,

My Lady is an ashen white, as one who is long dead."

He sat with his head resting on the back of the chair, a reminiscent smile softening his face. "My old nurse Mary Bicknell used to sing that song to me when I was small."

Personally, I thought that a woman who would sing something like that to a young child ought to be barred from her post, but I did not voice the idea. Baring-Gould, however, either read my thoughts or had a mind that ran in the same direction, because he opened one eye, looked straight at me, and said, "She did hasten to reassure me that Lady Howard was only on the road after midnight."