Penrun's eyes widened in startled amazement. He, himself, was the grandson of the notorious Halkon, a fact that not more than half a dozen people in the Universe knew--or so he had always believed. His mother, Halkon's only daughter, good and upright woman that she was, had hidden that family skeleton far back in the closet and solemnly warned Dick Penrun and his two sisters to keep it there. Yet this old man, who had singled him out of the crowd in the buffet not thirty minutes ago and drew him into conversation, knew the secret. Perhaps he really had been a cabin boy under Halkon! "I have been serving out the hundred-year sentence for piracy the judges imposed on me, a century in your own Earth prison of Sing Sing," muttered Lozzo. "I have just been released. Quick! My inner gods tell me my vase of life is toppling. I swore to your grandfather that I would deliver the message. It is here. Guard well your own life, for this paper is a thing of evil!" His hand rested nervously on the edge of the table. The ancient blue eyes swept the buffet with a lightning glance. Then he slid his hand forward across the polished wood. Penrun glimpsed a bit of yellow, folded paper beneath it. Then something tweaked his hair. A deafening explosion filled the buffet. Lozzo stiffened, his mouth gaped in a choked scream, and he sprawled across the table, dead. As he fell, a fat white hand darted over the table toward the oblong of folded, yellow paper lying unprotected on its surface. Penrun clutched at it frantically. The fat fingers closed on the paper and were gone. Penrun whirled about. The drapes of the doorway framed a heavy, pasty face with liquid black eyes. The slug gun was aiming again, this time at Penrun. He hurled himself sideways out of his chair as it roared a second time. The heavy slug buried itself in the corpse of the old Martian on the table. The face in the doorway vanished. * * * * * The next instant Penrun was through the door and racing down the long promenade deck under the glow of the electric lights, for the quartering sun was shining on the opposite side of the ship. Far down the deck ahead fled the slayer. The killer paused long enough to drop an emergency bulkhead gate. Five minutes later when Penrun and the other passengers succeeded in raising it, he had disappeared. One of the emergency space-suits beside the air-lock was missing. Penrun sprang to a nearby port-hole. Far back in space he saw the tiny figure shining in the sunlight, while the long flame of his Sextle rocket-pistol showed that he was checking his forward momentum as rapidly as possible. Unquestionably he would be picked up by some craft now trailing the liner, for the murder and theft of the paper must have been carefully planned. Penrun turned from the port-hole thoughtfully.