CHAPTER XII

AFTER BOURKE had gone Dick spent some little time adjusting the portable bell. The wires had been repaired, and now he stripped the bell push and replaced it with two thin plates of copper shaped like a thin V. He waited till it was dark, and then he climbed into the next house and, lifting the carpet, placed his improvised detector near the door. There was a slight bulge in the carpet, but this would not be noticed in the dark. Satisfied with his work, he returned to his room. The night was cold, with occasional s…