It was Dock Hing all right and he held a big revolver in his hand. Ed was in despair. "You again!" he gasped. "Yair! Me comee 'gain," chuckled Dock Hing, and he came down the ladder, his companion holding Ed covered while Hing descended. The other came down after him. Ed was a prisoner once more. "You gettee blox?" demanded Dock Hing. "Whatever happens, you shan't get it," thought Ed, and so he denied it. "You lie," said Dock Hing. "You go dlown into water twice. Me see you. Me tlink you gettee blox." "No!" persisted Ed. "There is no box." The Chinaman laughed softly. "Allee light," he said. "Dlen you dlive again and again and again till you gettee blox, see?" "It's no use," declared Ed. "There is no box, I tell you. I've looked and I can't find it." They did not mention Tom Quee. They never asked him how he came to be there. All they seemed interested in was the box. "You dive again," ordered Dock Hing. "Come now, you be good boy and we give you money so we find money in blox, see?" He ordered Ed to take off his shirt and make another dive. There was no help for it. "This time I'll give them the slip," thought Ed, and as he dove he swam away under the pier, coming up on the other side. But the wily Chinks were too many for the boy. As he rose to the surface a voice called, and looking up he saw Dock Hing grinning down over the stringpiece. "Go back!" cried the Chinaman. "Go back or me shootee you. Go back, you little flaud." They were everywhere. Ed was in despair. Yielding to the inevitable he turned and swam back under the pier. CHAPTER XII. CONCLUSION. Old King Brady thought that Harry was dead. They carried him out of the secret door only with the greatest difficulty. The worst was when it came to getting Harry up the narrow stairs, but even this was managed and they landed him in the ambulance at last. The young doctor in charge lent them little encouragement. "He is certainly gone, Mr. Brady," he said as he looked Harry over. "I wish I could hold out more hope to you, but I can't." Alice, who was in the ambulance, suddenly turned to the old detective and said: "Really, Mr. Brady, it is useless to take Harry to the hospital. If he is not dead now he will die before he gets there. The only possible chance to save him is to get a Chinese doctor." "Nonsense!" mused the ambulance surgeon. "What do Chinese doctors know? They are the worst kind of quacks." "Why, no." "Don't be in such a hurry to pronounce on what you don't understand. Alice, your suggestion is a good one. Doctor, we will take my partner to No. ---- Chatham Square." The place to which Old King Brady prepared to take Harry was Quong Lee's opium joint. This is located in a basement on Chatham Square. Quong Lee, who is a man advanced in years, reckons himself a particular friend of the old detective. Alice went in first and saw Quong Lee, coming out with word that they were to bring Harry right in.