In spite of his courage, Berrington hesitated. He might have recovered his self-possession and returned to the drawing-room, only the strange feeble cry of pain was raised again. It was more than flesh and blood could stand, and in a sudden passion Berrington opened the door. He would have entered resolutely, but Mary pulled him back. "The mischief has been done," she said hurriedly. "If anyone has to suffer let it be me. I have brought you to this pass and I must get you out as best I can. Carl, what is this?" The girl thrust herself past Berrington who stood in the shade of the doorway. There was a sudden snarling, with a cry from the girl, as a blow tingled on her cheek. Somebody laughed as if approving this cowardly business. With a cry of rage Berrington darted into the room. Instantly a pair of strong hands were laid on him and he was borne backwards. Just for a moment he lashed out freely and successfully and then the weight of numbers was too much for him. The dining-room door was closed again. CHAPTER XVIII Inspector Field swore a good round oath under his breath. He had not looked for an insane folly like this from a well-trained officer who might have been expected to keep his feelings in check. But, as Field sadly reflected, it was useless to anticipate anything rational when a woman came into the case. Everything had been going beautifully and smoothly a few minutes ago, and now the plot was ruined. Field was anything but a timid man, he had been in too many tight places in his life to know the meaning of the word timidity, but then he had to exercise a certain discretion. At the same time he was not blind to the fact that his military ally was in considerable danger. The only thing now would be to bluff the whole thing through, to pretend that the game was up and that the house was surrounded with police. With this intention in his mind, Field crossed the hall and tried the dining-room door. He was not altogether surprised to find the door locked. He listened at the keyhole, but he could not hear anything whatever. Furthermore, the application of an eye to the keyhole disclosed the fact that the room was in darkness. Despite his courage a thrill ran down the spine of the inspector. There was some more than usually devilish work going on here. "Well, it can't be helped," Field muttered. "It's the fortune of war. One of us has come to grief, and if I stay here I may share the same fate, and I the only one left who knows anything of the secrets of the prison house. I'll run over and get assistance and we'll search the house. After all, my friend the Colonel has only himself to blame."