Dead Men's Money by J.S. Fletcher

There was quite a company of men came up the stair with Murray, crowding, all of them, into the room, with eyes full of astonishment at what they saw: Mr. Lindsey and Mr. Gavin Smeaton, and a policeman or two, and -- what was of more interest to me -- a couple of strangers. But looking at these more closely, I saw that I had seen one of them before -- an elderly man, whom I recognized as having been present in court when Carter was brought up before the magistrates; a quiet, noticing sort of man whom I remembered as appearing to take great and intelligent interest in the proceedings. And he and the other man now with him seemed to take just as keen an interest in what Chisholm and I had to tell; but while Murray was full of questions to both of us, they asked none. Only -- during that questioning -- the man whom I had never seen before quietly lifted the hanging which I had spread over Hollins's dead body, and took a searching look at his face.

Mr. Lindsey drew me aside and pointed at the elderly man whom I remembered seeing in the police court.