No Name by Wilkie Collins

If Captain Wragge could have looked into Mrs. Lecount's room while he stood on the Parade watching the light in her window, he would have seen the housekeeper sitting absorbed in meditation over a worthless little morsel of brown stuff which lay on her toilet-table.

However exasperating to herself the conclusion might be, Mrs. Lecount could not fail to see that she had been thus far met and baffled successfully at every point. What was she to do next? If she sent for Mr. Pendril when he came to Aldborough (with only a few hours spared from his business at her disposal), what definite course would there be for him to follow? If she showed Noel Vanstone the original letter from which her note had been copied, he would apply instantly to the writer for an explanation: would expose the fabricated story by which Mrs. Lecount had succeeded in imposing on Miss Garth; and would, in any event, still declare, on the evidence of his own eyes, that the test by the marks on the neck had utterly failed. Miss Vanstone, the elder, whose unexpected presence at Aldborough might have done wonders -- whose voice in the hall at North Shingles, even if she had been admitted no further, might have reached her sister's ears and led to instant results -- Miss Vanstone, the elder, was out of the country, and was not likely to return for a month at least. Look as anxiously as Mrs. Lecount might along the course which she had hitherto followed, she failed to see her way through the accumulated obstacles which now barred her advance.