The mention of a letter at once interested French. Tanner had told him that the nurse had certainly received one, and was believed to have received two, letters while at Bryanston Square. The first one, the doubtful one, she was thought to have had on or about Thursday, the 29th of September—that is, ten days before her disappearance. The second she had undoubtedly received on the Tuesday following, four days before the disappearance. Of these, the first was believed to have added a good deal to her perturbation of mind. The second she seemed to have been anxiously expecting.
“When did you write your letter, Mrs. Carling?” asked French.
The lady was afraid she could scarcely tell him; she thought five or six days after the nurse had left, but she wasn’t sure. French thereupon got down to
