"Well, as you know, he came down again to see me--and the next thing I heard was that he had disappeared! At once--days before Mrs. Pavely received that very singular letter--I associated Apra with the mystery. It was, however, no business of mine to teach the police their business, though I thought it probable that there would come a moment when I should have to intervene, and reveal the little that I knew. That moment came when Mr. Pavely's body was discovered in Apra's office at Duke House." Greville Howard straightened himself somewhat in his easy chair. "I at once wrote, as I felt in duty bound, to Sir Angus Kinross. I had met him, under rather unfortunate circumstances, some years ago, before he became Commissioner of Police. That, doubtless, had given him a prejudice against me. Be that as it may, instead of taking advantage of my offer to tell him in confidence all I knew, he sent a most unpleasant person down to interview me. This man, a pompous, ignorant fellow, came twice--once before the inquest, once after the inquest. I naturally took a special pleasure in misleading him, and in keeping to myself what I could have told. But though I was able to give him the impression I desired to convey, he was not able to keep anything he knew from _me_; and, at the end of our second interview, he let out that the police had very little doubt that two men had been concerned in the actual murder--for murder the police by then believed it to be--of Mr. Godfrey Pavely." Greville Howard stopped speaking for a moment. "Two men?" repeated Katty in a bewildered tone. And the other nodded, coolly. "Yes, that is the opinion they formed, very early in the day, at Scotland Yard. They also made up their minds that it would be one of those numerous murders of which the perpetrators are never discovered. And, but for you and me, Mrs. Winslow, the very clever perpetrators of this wonderfully well planned murder would have escaped scot-free." He touched his invisible bell, and his man answered it. "Make up the fire," he said, "--a good lasting fire." When this had been done, he again turned to Katty. "We now," he said, "come to the _really_ exciting part of my story. Up to now, I think I have told you nothing that you did not know." "I had no idea," said Katty in a low, tense voice, "that the police believed there were _two_ people concerned with Godfrey's death." She was trying, desperately, to put the puzzle together--and failing.