"If you resist, my friends will fire." "We don't intend to," replied Old King Brady. "Then I'll relieve you of your own handcuffs to secure you." He felt in the old detective's pocket, brought out the steel bracelets and snapped them on the detective. Young King Brady was very restless. To submit without a fight was more than he could bear. His obstinacy suddenly got the best of his good judgment, and he made up his mind to give them a tussle. Leaping beside the girl he seized her, swung her around between himself and the other men and cried: "If you fire, you'll hit this girl!" Clara gave a shriek. "Harry!" roared Old King Brady in some dismay. The men in the doorway dared not fire. Jean, fearing an attack, plunged across the room in tending to get out of danger in the hall. "Let me go!" gasped the girl. "Give up my advantage? Never!" panted the boy, a reckless, daring light gleaming in his eyes. He was close to the open window. At a glance he saw a way to escape. Unaided, he could not expect to arrest these men and the girl, for Old King Brady was rendered powerless. The yard was only eight feet below. "Can you jump out the window?" he asked his partner. "They'll fire if I budge." This remark was certainly true. While Harry had the advantage of using the girl as a shield, the four Canadians held the old detective at their mercy. Harry drew his pistol. The girl began to struggle to get free. "Keep still!" said the boy in threatening tones. "If any harm befalls my partner, I'll put a bullet in you, young woman!" The terrible earnestness of his voice alarmed her. "You wouldn't injure a lady, would you?" she asked, appealing to his manhood. "No gentleman would do that." "You are only a criminal," he replied coldly, "and as it's a case of our lives or yours, I wouldn't hesitate to shoot you to save ourselves." Detectives are not sentimental. On the contrary, their work makes them harsh. Harry wanted to scare the girl and he succeeded well, for she remained passive, and burst into tears. The boy quickly saw his advantage and cried: "Now, if any of your gang attempts to injure us, I'll kill you!" As he spoke, he placed the muzzle of his pistol against her head, turned her around and backed over to Old King Brady. "Come!" he whispered. "We'll use her as a shield and back over to the door. They'll bitterly rue it if they fire!" The four spies looked desperate and one of them spoke to the girl in French as the detectives retreated, holding her between them and their enemies. The girl replied in English, saying: "Never mind me. We must not let them escape. Tackle them." Obeying her, they rushed toward the officers. Harry aimed his pistol at them and fired twice. "Go for the door!" he yelled. And hurling the girl against the four Canadians, he and his partner rushed out into the hall. The door was locked. CHAPTER XIV. ON HARLEM BRIDGE. "Upstairs with you!" gasped Harry. "We can't get out the front door."