The inspector turned up one of his feet and Ennis saw that the heel was missing from that shoe. Carefully Campbell slid the steel blade beneath the shoe-sole, the heel-hilt sliding into place and seeming merely the innocent heel of the shoe. "So that's how you got loose down in the water!" Ennis exclaimed, and the inspector nodded briefly. "That trick's done me good service before--even with your hands tied behind your back you can get out that knife and use it. It was touch and go, though, whether I could get it out and cut myself loose in the water in time enough to free you." Ennis gripped the inspector's shoulder. "Campbell, Ruth is in there! By heaven, we've found her and now we can get her out!" "Right!" said the officer grimly. "We'll go around to the front and in two minutes we'll be in there with my men." * * * * * They climbed dripping to their feet, and hastened from the little floating dock up onto the shore, through the darkness to the cobbled street. The shabbily disguised men of Inspector Campbell were not now in front of Chandra Dass' café, but lurking in the shadows across the street. They came running toward Campbell and Ennis. "All right, we're going in there," Campbell exclaimed in steely tones. "Get Chandra Dass, whatever you do, but see that his prisoners are not harmed." He snapped a word and one of the men handed pistols to him and to Ennis. Then they leaped toward the door of the Hindoo's café, from which still streamed ruddy light and the babel of many voices. A kick from Inspector Campbell sent the door flying inward, and they burst in with guns gleaming wickedly in the ruddy light. Ennis' face was a quivering mask of desperate resolve. The motley patrons jumped up with yells of alarm at their entrance. The hand of a Malay waiter jerked and a thrown knife thudded into the wall beside them. Ennis yelled as he saw Chandra Dass, his dark face startled, leaping back with his servants through the black curtains. He and Campbell drove through the squealing patrons toward the back. The Malay who had thrown the knife rushed to bar the way, another dagger uplifted. Campbell's gun coughed and the Malay reeled and stumbled. The inspector and Ennis threw themselves at the black curtains--and were dashed back. They tore aside the black folds. A dull steel door had been lowered behind them, barring the way to the back rooms. Ennis beat crazily upon it with his pistol-butt, but it remained immovable. "No use--we can't break that down!" yelled Campbell, over the uproar. "Outside, and around to the other end of the building!"