“Try to describe him, to recognize him, say a week hence, among his other eighty-nine doubles; worse still, to swear his life away, if he happened to be implicated in some crime, wherein your recognition of him would place the halter round his neck.

“Try that, I say, and having utterly failed you will more readily understand how one of the greatest scoundrels unhung is still at large, and why the mystery on the Underground Railway was never cleared up.

“I think it was the only time in my life that I was seriously tempted to give the police the benefit of my own views upon the matter.  You see, though I admire the brute for his cleverness, I did not see that his being unpunished could possibly benefit any one.

“In these days of tubes and motor traction of all kinds, the old-fashioned ‘best, cheapest, and quickest route to City and West End’ is often deserted, and the good old Metropolitan Railway carriages cannot at any time be said to be overcrowded.  Anyway, when that particular train steamed into Aldgate at about 4 p.m. on March 18th last, the first-class carriages were all but empty.

“The guard marched up and down the platform looking into all the carriages to see if anyone had left a halfpenny evening paper behind for him, and opening the door of one of the first-class compartments, he noticed a lady sitting in the further corner, with her head turned away towards the window, evidently oblivious of the fact that on this line Aldgate is the terminal station.

“‘Where are you for, lady?’ he said.

“The lady did not move, and the guard stepped into the carriage, thinking that perhaps the lady was asleep.  He touched her arm lightly and looked into her face.  In his own poetic language, he was ’struck all of a ‘eap.’  In the glassy eyes, the ashen colour of the cheeks, the rigidity of the head, there was the unmistakable look of death.

“Hastily the guard, having carefully locked the carriage door, summoned a couple of porters, and sent one of them off to the police-station, and the other in search of the station-master.

“Fortunately at this time of day the up platform is not very crowded, all the traffic tending westward in the afternoon.  It was only when an inspector and two police constables, accompanied by a detective in plain clothes and a medical officer, appeared upon the scene, and stood round a first-class railway compartment, that a few idlers realized that something unusual had occurred, and crowded round, eager and curious.

“Thus it was that the later editions of the evening papers, under the sensational heading, ‘Mysterious Suicide on the Underground Railway,’ had already an account of the extraordinary event.  The medical officer had very soon come to the decision that the guard had not been mistaken, and that life was indeed extinct.

“The lady was young, and must have been very pretty before the look of fright and horror had so terribly distorted her features.  She was very elegantly dressed, and the more frivolous papers were able to give their feminine readers a detailed account of the unfortunate woman’s gown, her shoes, hat, and gloves.