I turned in the air and instead of hitting him squarely I caromed off his shoulder and we both sprawled onto the balcony. It shivered under the impact, but the ancient stone held. The fall had half-stunned me, and with pain-blurred reasoning I hoped that his shoulder felt as bad as my leg. For a few moments I could do nothing but gasp for breath and try to scramble towards him. A long, thin-bladed knife had been knocked from his hand by the impact and I could see it glittering where he reached for it. His fingers clutched it just as I attacked. He grunted and made a vicious stab at me that brushed my sleeve. Before he could draw back I had his knife wrist in my hand and clamped on. It was a silent, nightmare battle. Both of us were half-dazed from my drop, yet we knew it was life we were battling for. I couldn't stand because of my bruised leg and he was instantly on top of me, heavier and stronger. He couldn't use the arm I had landed on, but it took all the strength of both my arms to hold away the menacing blade. There was no sound other than our hoarse panting. This assassin was going to win as weight and remorseless strength brought the knife down. Sweat almost blinded me, but I could still see well enough to notice the twisted way his other arm hung. I had broken a bone when I hit--yet he had never made a sound. There is no such thing as fair fighting when you are struggling for your life. I squirmed my leg out from under him and managed to bend it enough to dig the knee into his broken arm. His whole body shuddered. I did it again. Harder. He twisted, trying to pull away from the pain. I heaved sideways, throwing him off balance. His elbow bent as he tried to save himself from falling and I put all my strength in both hands turning that sinewy wrist and driving the hand backwards. It almost worked, but he was still stronger than I was and the point of the blade merely scratched his chest. Even as I was fighting to turn the hand again he shuddered and died. A ruse would not have tricked me--but this was no ruse. I felt every muscle in his body tighten rock-hard in a spasm as he fell sideways. My grip on his wrist didn't lessen until the light came on in the room behind me. Only then did I see the ugly yellow stain halfway up the blade of the knife. A quick-acting nerve poison, silent and deadly. There, on the sleeve of my shirt, was a thin yellow mark where the blade had brushed me. I knew these poisons didn't need a puncture, they could work just as well on the naked skin. With infinite caution, struggling against the fatigue that wanted my hands to shake, I peeled my shirt slowly off. Only when it had been hurled on top of the corpse did I let myself drop backwards, gasping for air.