"Fly?" said Lupin sharply. "No, thank you; never again. I did flying enough last night to last me a lifetime. For the rest of my life I'm going to crawl—crawl like a snail. But come along, you two, I must take you to the police-station."
He opened the front door, and they came out on the steps. The policeman in charge of the car saluted.
Lupin paused and said softly: "Hark! I hear the sound of wedding bells."
They went down the steps.
Even as they were getting into the car some chance blow of Guerchard or Dieusy struck a hidden spring and released the lift. It sank to the level of Lupin's smoking-room and stopped. The doors flew open, Dieusy and Guerchard sprang out of it; and on the instant the brown- faced, nervous policeman sprang actively on Guerchard and pinned him. Taken by surprise, Guerchard yelled loudly, "You stupid idiot!" somehow entangled his legs in those of his captor, and they rolled on the floor. Dieusy surveyed them for a moment with blank astonishment. Then, with swift intelligence, grasped the fact that the policeman was Lupin in disguise. He sprang upon them, tore them asunder, fell heavily on the policeman, and
