I did not answer when momentarily Alan paused. So strange a thing. My mind whirled with it; struggled to encompass it. And like the meaningless individual pieces of a puzzle, dropping so easily into place when the key piece is fitted, I saw Polter stealing that fragment of gold; abducting Dr. Kent--perhaps because Polter himself was not fully acquainted with the secret. And now, Polter up here with a fabulously rich "gold mine." And Babs, abducted by him, to be taken--where? It set me shuddering. "That's what it was," Alan reiterated. "And Polter, here now with what he calls a 'mine.' It isn't a mine, it's a laboratory! He's got father too, hidden God knows where! And now Babs. We've got to get them, George! The police can't help us! It's just you and me, to fight this thing. And it's diabolical!" CHAPTER II We soared over the divided channel of the St. Lawrence, between Orleans and the mainland. Montmorency Falls in a moment showed dimly white through the murk to our left, a great hanging veil of ice higher than Niagara. Further ahead, the lights of the little village of St. Anne de Beaupre were visible with the gray-black towering hills behind them. "Swing left, George. Over the mainland. That's St. Anne. We pass this side of it. Put the mufflers on. This damn thing roars like a tower siren." I cut in the muffler and switched off our wing-lights. It was illegal but we were past all thought of that. We were both desperate; the slow prudent process of acting within the law had nothing to do with this affair. We both knew it. Our little plane was dark, and amid the sounds of this night blizzard our muffled engine couldn't be heard. Alan touched me. "There are his lights; see them?" We had passed St. Anne. The hills lay ahead--a wild mountainous country stretching northward to the foot of Hudson Bay. The blizzard was roaring out of the North and we were heading into it. I saw, on what seemed like a dome-shaped hill perhaps a thousand feet above the river level, a small cluster of lights which marked Polter's property. "Fly over it once, George," Alan said. "Low--we can chance it. And find a place to land near the walls." We presently had it under us. I held the plane at five hundred feet, and cut our speed to the minimum of twenty miles an hour facing the gale, though it was sixty or seventy when we turned. There were a score or two of hooded ground lights. But there was little reflection aloft, and in the murk of the snowfall I felt we could escape notice. We crossed, turned and went back in an arc following Polter's curved outer wall. We had a good view of it. A weird enough looking place, here on its lonely hilltop. No wonder the wealthy "Frank Rascor" had attained local prominence!