Read it through once

It troubled me that there should have been a lurker on the stairs, on that night of all nights in the year, and I asked the watchman, on the chance of eliciting some hopeful explanation as I handed him a dram at the door, whether he had admitted at his gate any gentleman who had perceptibly been dining out? Yes, he said; at different times of the night, three. One lived in Fountain Court, and the other two lived in the Lane, and he had seen them all go home. Again, the only other man who dwelt in the house of which my chambers formed a part had been in the country for some weeks, and he certainly had not returned in the night, because we had seen his door with his seal on it as we came upstairs.