The corridor door was closed and locked behind Candron as he walked toward the three interior guards. They were three more big, tough Mongols, all wearing the insignia of lieutenants. This was not a prisoner who could be entrusted to the care of common soldiers; the secret was too important to allow the _hoi polloi_ in on it. They carried no weapons; the three of them could easily take care of Ch'ien if he tried anything foolish, and besides, it kept weapons out of Ch'ien's reach. There were other methods of taking care of the prisoner if the guards were inadequate. The two officers who were playing cards looked up, acknowledged Dr. Wan's presence, and went back to their game. The third, after glancing at the screen, opened the door to James Ch'ien's apartment. Spencer Candron stepped inside. It was because of those few seconds--the time during which that door was open--that Candron had called the monitors who watched Ch'ien's apartment. Otherwise, he wouldn't have bothered. He needed fifteen seconds in which to act, and he couldn't do it with that door open. If the monitors had given an alarm in these critical seconds.... But they hadn't, and they wouldn't. Not yet. The man who was sitting in the easy-chair on the opposite side of the room looked up as Candron entered. James Ch'ien (B.S., M.S., M.I.T., Ph. D., U.C.L.A.) was a young man, barely past thirty. His tanned face no longer wore the affable smile that Candron had seen in photographs, and the jet-black eyes beneath the well-formed brows were cold instead of friendly, but the intelligence behind the face still came through. As the door was relocked behind him, Candron said, in Cantonese: "This unworthy one hopes that the excellent doctor is well. Permit me to introduce my unworthy self: I am Dr. Wan Feng." Dr. Ch'ien put the book he was reading in his lap. He looked at the ceiling in exasperation, then back at Candron. "All right," he said in English, "so you don't believe me. But I'll repeat it again in the hope that I can get it through your skulls." It was obvious that he was addressing, not only his visitor, but anyone else who might be listening. "I do not speak Chinese," he said, emphasizing each word separately. "I can say 'Good morning' and 'Good-by', and that's about it. I _do_ wish I could say 'drop dead,' but that's a luxury I can't indulge. If you can speak English, then go ahead; if not, quit wasting my time and yours. Not," he added, "that it won't be a waste of time anyway, but at least it will relieve the monotony." Candron knew that Ch'ien was only partially telling the truth. The physicist spoke the language badly, but he understood it fairly well. "Sorry, doctor," Candron said in English, "I guess I forgot myself. I am Dr. Wan Feng." Ch'ien's expression didn't change, but he waved to a nearby chair. "Sit down, Dr. Feng, and tell me what propaganda line you've come to deliver now."