Blank sheets of paper! Yet Number 2 is convinced that something, words, figures are somehow written on those sheets of paper. He enlists a laboratory technician to try everything, infra-red etc, etc. But I have to ask myself why didn’t Number 2 test the seemingly blank sheets of paper for himself? After all he had the means when he used the electrostatic Detection Apparatus earlier to test a sheet of paper taken from a note pad on Number 6’s writing bureau, and discovered the note to XO4 from D6.
Be seeing you