There was no chance for Harse now. The man was leaping toward him; there would be no time for him to open the bag, take out the weapon.... But he didn't have to. There was a thin, singing, whining sound from the bag. It leaped out of Harse's hand, leaped free as though it had invisible wings, and flew at the man in the red bandanna. The man stumbled and jumped aside, the eyes incredulous over the mask. The silvery flat metal kit spun round him, whining. It circled him once, spiraled up. Behind it, like a smoke trail from a destroyer, a pale blue mist streamed backward. It surrounded the man and hid him. The bag flew back into Harse's hand. The violet mist thinned and disappeared. And the man was gone, as utterly and as finally as any chambermaid or driver of a truck. There was a moment of silence. Mooney stared without belief at the snow sifting down from the bushes that the man had hid in. Harse looked opaquely at Mooney. "It seems," he said, "that in these slums are many. Dangers?" Mooney was very quiet on the way back to the hotel. Harse, for once, was not gazing into his viewer. He sat erect and silent beside Mooney, glancing at him from time to time. Mooney did not relish the attention. The situation had deteriorated. It deteriorated even more when they entered the lobby of the hotel. The desk clerk called to Mooney. Mooney hesitated, then said to Harse: "You go ahead. I'll be up in a minute. And listen—don't forget about my knock." Harse inclined his head and strode into the elevator. Mooney sighed. "There's a gentleman to see you, Mr. Mooney," the desk clerk said civilly. Mooney swallowed. "A—a gentleman? To see me?" The clerk nodded toward the writing room. "In there, sir. A gentleman who says he knows you." Mooney pursed his lips.