Phantom- Safety Pin Pickpocket

  “Yes, to fasten you to the twenty-thousand francs! Then, whether it’s here, or on the drive from here to your place, or at your place, you will feel the hand that pulls at your pocket and you will see if it’s mine! Oh, so you’re suspecting me now, are you? A safety-pin!”
...
  Moncharmin took the envelope from Richard’s pocket and drew out the bank-notes with a trembling hand, for, this time, in order frequently to make sure of the presence of the notes, he had not sealed the envelope nor even fastened it. He felt reassured on finding that they were all there and quite genuine. He put them back in the tail-pocket and pinned them with great care. Then he sat down behind Richard’s coat-tails and kept his eyes fixed on them, while Richard, sitting at his writing-table, did not stir.
...
  “Well, I can feel the pin.”
  “Of course, as you said, we can’t be robbed without noticing it.”
  But Moncharmin, whose hands were still fumbling, bellowed:
  “I can feel the pin, but I can’t feel the notes!”
  “Come, no joking, Moncharmin! … This isn’t the time for it.”
  “Well, feel for yourself.”
  Richard tore off his coat. The two managers turned the pocket inside out. The pocket was empty. And the curious thing was that the pin remained, stuck in the same place.
  Richard and Moncharmin turned pale. There was no longer any doubt about the witchcraft.
  “The ghost!” muttered Moncharmin.

-Chapter XVI