I was forced to jump backward quickly to avoid his first cut, but when he swung the second time my own sword was out and I was on my guard. Yo Seno proved himself no mean antagonist. He was clever with the sword and he knew that he was fighting for his life. I wondered at first why he did not call for help and then I came to the conclusion that it was because there were no warriors in the adjoining room, as there had been upon my previous visit to Yo Seno's quarters. We fought in silence, only the din of metal upon metal reflecting the deadliness of the combat. I was in a hurry to be done with him and I was pressing him closely when he resorted to a trick which came near to proving my undoing. I had backed him up against his desk and thought that I had him where he could not escape. I could not see his left hand behind him; nor the heavy vase for which it was groping, but an instant later I saw the thing flying straight at my head and I also saw the opening which Yo Seno made in the instant that he cast the missile, for so occupied was he with his aim that he let his point drop. Stooping beneath the vase I sprang into close quarters, driving my sword through the heart of Yo Seno. As I wiped the blood from my blade upon the hair of my victim I could not repress a feeling of elation that it had been my hand that had cut down the seducer of Phao and in some measure avenged the honor of my friend, Nur An. Now, however, was no time for meditation. I heard footsteps approaching in the corridor without and hastily seizing the harness of the corpse, I dragged it toward the panel which hid the entrance to the secret corridor that led to the room in the east tower--that familiar corridor where I had passed happy moments alone with Tavia. With more haste than reverence, I dumped the corpse of Yo Seno into the dark interior and then, closing the panel after me, I groped my way through the darkness toward the tower room, my heart high with the hope that I might find Tavia still there. As I approached the panel at the tower end of the corridor I could feel my heart beating rapidly--a sensation to which I was unaccustomed and which I could not explain. I was positive that I was in excellent physical condition, and, while it is not at all unusual that surprise or imminent danger causes the heart of some men to palpitate, even though they may be endowed with exceptional courage, yet, for my part, I had never experienced such a sensation and I must admit that I was deeply mystified. The anticipation of seeing Tavia again soon caused me to forget the unpleasant sensation and as I stopped behind the panel my whole mind was occupied with pleasurable consideration of what I hoped awaited me beyond--the longed for reunion with this best of friends.