“Then Dr. Watson and I will come round in time. For the present, Mrs. Warren, goodbye.”

At half-past twelve we found ourselves upon the steps of Mrs. Warren’s house⁠—a high, thin, yellow-brick edifice in Great Orme Street, a narrow thoroughfare at the northeast side of the British Museum. Standing as it does near the corner of the street, it commands a view down Howe Street, with its more pretentious houses. Holmes pointed with a chuckle to one of these, a row of residential flats, which projected so that they could not fail to catch the eye.