“Then we shall take it.  Your case has certainly some features of great interest, and I shall be delighted to look into it.  Well, it’s nearly one, and we had best get a few hours’ sleep.  I daresay you can manage all right on the sofa in front of the fire.  I’ll light my spirit lamp, and give you a cup of coffee before we start.”

The gale had blown itself out next day, but it was a bitter morning when we started upon our journey.  We saw the cold winter sun rise over the dreary marshes of the Thames and the long, sullen reaches of the river, which I shall ever associate with our pursuit of the Andaman Islander in the earlier days of our career.  After a long and weary journey, we alighted at a small station some miles from Chatham.  While a horse was being put into a trap at the local inn, we snatched a hurried breakfast, and so we were all ready for business when we at last arrived at Yoxley Old Place.  A constable met us at the garden gate.

“Well, Wilson, any news?”

“No, sir—­nothing.”

“No reports of any stranger seen?”

“No, sir.  Down at the station they are certain that no stranger either came or went yesterday.”

“Have you had inquiries made at inns and lodgings?”

“Yes, sir:  there is no one that we cannot account for.”

“Well, it’s only a reasonable walk to Chatham.  Anyone might stay there or take a train without being observed.  This is the garden path of which I spoke, Mr. Holmes.  I’ll pledge my word there was no mark on it yesterday.”

“On which side were the marks on the grass?”

“This side, sir.  This narrow margin of grass between the path and the flower-bed.  I can’t see the traces now, but they were clear to me then.”

“Yes, yes:  someone has passed along,” said Holmes, stooping over the grass border.  “Our lady must have picked her steps carefully, must she not, since on the one side she would leave a track on the path, and on the other an even clearer one on the soft bed?”

“Yes, sir, she must have been a cool hand.”

I saw an intent look pass over Holmes’s face.

“You say that she must have come back this way?”

“Yes, sir, there is no other.”

“On this strip of grass?”

“Certainly, Mr. Holmes.”

“Hum!  It was a very remarkable performance—­very remarkable.  Well, I think we have exhausted the path.  Let us go farther.  This garden door is usually kept open, I suppose?  Then this visitor had nothing to do but to walk in.  The idea of murder was not in her mind, or she would have provided herself with some sort of weapon, instead of having to pick this knife off the writing-table.  She advanced along this corridor, leaving no traces upon the cocoanut matting.  Then she found herself in this study.  How long was she there?  We have no means of judging.”

“Not more than a few minutes, sir.  I forgot to tell you that Mrs. Marker, the housekeeper, had been in there tidying not very long before—­about a quarter of an hour, she says.”