Therefore Jeffrey would have to be disguised in some way; and what disguise could be simpler and more effective than the one that I suggest was used?
"Again; it was unavoidable that some one--the cabman--should know that Jeffrey was not alone when he came to the inn that night.

If the fact had leaked out and it had become known that a man had accompanied him to his chambers, some suspicion might have arisen, and that suspicion would have pointed to John, who was directly interested in his brother's death.

But if it had transpired that Jeffrey was accompanied by a woman, there would have been less suspicion, and that suspicion would not have pointed to John Blackmore.
"Thus all the general probabilities are in favour of the hypothesis that this woman was Jeffrey Blackmore.

There is, however, an item of positive evidence that strongly supports this view.

When I examined the clothing of the deceased, I found on the trousers a horizontal crease on each leg as if the trousers had been turned up half-way to the knees.