Sir Arthur Conan Doyle: The Return of Sherlock Holmes

10. The Adventure of the Golden Pince-Nez. (continued)

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"It is very rough, of course, and it only deals with the points which seem to me to be essential. All the rest you will see later for yourself. Now, first of all, presuming that the assassin entered the house, how did he or she come in? Undoubtedly by the garden path and the back door, from which there is direct access to the study. Any other way would have been exceedingly complicated. The escape must have also been made along that line, for of the two other exits from the room one was blocked by Susan as she ran downstairs and the other leads straight to the Professor's bedroom. I therefore directed my attention at once to the garden path, which was saturated with recent rain and would certainly show any footmarks.

"My examination showed me that I was dealing with a cautious and expert criminal. No footmarks were to be found on the path. There could be no question, however, that someone had passed along the grass border which lines the path, and that he had done so in order to avoid leaving a track. I could not find anything in the nature of a distinct impression, but the grass was trodden down and someone had undoubtedly passed. It could only have been the murderer, since neither the gardener nor anyone else had been there that morning and the rain had only begun during the night."

"One moment," said Holmes. "Where does this path lead to?"

"To the road."

"How long is it?"

"A hundred yards or so."

"At the point where the path passes through the gate you could surely pick up the tracks?"

"Unfortunately, the path was tiled at that point."

"Well, on the road itself?"

"No; it was all trodden into mire."

"Tut-tut! Well, then, these tracks upon the grass, were they coming or going?"