To all this information, much of which we already knew, Holmes listened with polite attention, but I, who knew him so well, could clearly see that his thoughts were elsewhere, and I detected a mixture of mingled uneasiness and expectation beneath that mask which he was wont to assume. At last he started in his chair, and his eyes brightened. There had been a ring at the bell. A minute later we heard steps upon the stairs, and an elderly red-faced man with grizzled side-whiskers was ushered in. In his right hand he carried an old-fashioned carpetbag, which he placed upon the table.