I had little doubt that I had come to the end of my career when I
perceived the somewhat sinister figure of the late Professor Moriarty
standing upon the narrow pathway which led to safety. I read an
inexorable purpose in his gray eyes. I exchanged some remarks with him,
therefore, and obtained his courteous permission to write the short note
which you afterwards received. I left it with my cigarette-box and my
stick, and I walked along the pathway, Moriarty still at my heels. When
I reached the end I stood at bay. He drew no weapon, but he rushed at me
and threw his long arms around me. He knew that his own game was up, and
was only anxious to revenge himself upon me. We tottered together upon
the brink of the fall. I have some knowledge, however, of baritsu, or
the Japanese system of wrestling, which has more than once been very
useful to me. I slipped through his grip, and he with a horrible scream
kicked madly for a few seconds, and clawed the air with both his hands.
But for all his efforts he could not get his balance, and over he went.
With my face over the brink, I saw him fall for a long way. Then he
struck a rock, bounded off, and splashed into the water."

I listened with amazement to this explanation, which Holmes delivered
between the puffs of his cigarette.

"But the tracks!" I cried. "I saw, with my own eyes, that two went down
the path and none returned."

"It came about in this way. The instant that the Professor had
disappeared, it struck me what a really extraordinarily lucky chance
Fate had placed in my way. I knew that Moriarty was not the only man who
had sworn my death. There were at least three others whose desire for
vengeance upon me would only be increased by the death of their leader.
They were all most dangerous men. One or other would certainly get me.