Leon Lemaire was no mean antagonist. His flailing arms were everywhere and a huge fist caught Karl on the side of his head and sent him reeling. But this only served to clear his mind further and to fill him with a cold rage. He bored in unmercifully and Lemaire soon was on the defensive. A blow to his midsection had him puffing and Karl hammered in rights and lefts to the now sinister face that rocked his opponent to his heels. But the minion of the Zar was crafty. He slid to the floor as if groggy, then with catlike agility, dove for Karl's knees, bringing him down with a crash. The air whistled by them as the ship was drawn upward with ever-increasing speed. The other passengers cowered in fright as the two men rolled over and over on the floor, banging at each other indiscriminately. Both were hurt. Karl's lip was split, and bleeding profusely. One eye was closing. But now he was on top and he pummeled his opponent to a pulp. Long after he ceased resisting them, the blows continued until the features of Leon Lemaire were unrecognizable. The infuriated Karl did not see that one of the members of the party was creeping up on him from behind. Neither was he aware that the upward motion of the aero had ceased and that they now hung motionless in space. A terrific blow at the base of his skull sent him sprawling. Must have been struck by a rocket, one of those funny ships that crossed the ocean so quickly. A million lights danced before his aching eyeballs. Lying prone across the inert body of his foe, dimly conscious and fingers clutching weakly, he knew that the cabin was filled with people. Alien voices bellowed commands. There was the screaming of women; the sound of blows; curses ... then all was silence and darkness. * * * * * It was a far cry to the little book shop off Cooper Square, but Karl was calling for Rudolph when he next awoke to the realization that he was still in the land of the living. His head was bandaged and his tongue furry. A terrible hangover. Then he heard voices and they were discussing Peter Van Dorn. He opened one eye as an experiment. The other refused to open. But it might have been worse. At least he was alive; he could see well enough with the one good optic. "Sh-h!" whispered one of the voices. "He's recovering!" He looked solemnly into the eyes of an old man; a pair of wise and gentle eyes that reminded him somehow of Rudolph's. "Quiet now, Peter," said the old man. "You'll be all right in a few minutes. Banged up a bit, you are, but nothing serious." "Don't call me Peter," objected Karl. He loathed the sound of the name; loathed himself for his recent thoughts and actions. "I am Karl Krassin," he continued, "and as such will remain until I die."