The first few days which the partners spent at the Opera were given over to the delight of finding themselves the head of so magnificent an enterprise; and they had forgotten all about that curious, fantastic story of the ghost, when an incident occurred that proved to them that the joke⁠—if joke it were⁠—was not over. M. Firmin Richard reached his office that morning at eleven o’clock. His secretary, M. Rémy, showed him half a dozen letters which he had not opened because they were marked “private.” One of the letters had at once attracted Richard’s attention not only because the envelope was addressed in red ink, but because he seemed to have seen the writing before. He soon remembered that it was the red handwriting in which the memorandum-book had been so curiously completed. He recognized the clumsy childish hand. He opened the letter and read: