Henry Baskerville came so to London to Holmes and Watson, and in his hotel he found a letter with words of paper. In the letter stood "as you value your life or your reason, keep away from the moor". With Holmes they found, that the letter wrote by one of the Charing Cross Hospital. They agreed a new meeting, because Sherlock willed think about. Mortimer and Baskerville walked so to the hotel and Holmes and Watson followed them. Holmes realized, that an unknown person Henry and the doctor stalked, but he don`t knew who. The new meeting was at one of the messenger offices of London. Holmes ordered a boy of the office, all hotels around the Charing Cross Hospital, to searched about the newspaper with holes from the words of the letter.