this thin coating of snow will betray the fact beyond the question of a doubt."
Twenty minutes later the hand-car put in an appearance, manned by a couple of linemen from the junction, and, word having been wired up the line to hold back all trains for a period of half an hour in the interests of Scotland Yard, Cleek and Narkom boarded the vehicle, and went whizzing up the metals in the direction of Honor Oak Park, the shifting searchlight sweeping the path from left to right and glaring brilliantly on the surface of the fallen snow.
Four lines of tracks gleamed steel-bright against its spotless level—the two outer ones being those employed by the local trains going to and fro between London and the suburbs, the two inner ones belonging to the main line—but not one footstep indented the thin surface of that broad expanse of snow from one end of the journey to the other.
"The murderer, whoever he is or wherever he went, never set foot upon so much as one inch of this ground, that's certain," said Narkom, as he gave the order to reverse the car and return. "You feel satisfied of that, do you not, my dear fellow?"
"Thoroughly, Mr. Narkom; there can't be two opinions upon that point. But, at the same time, he did leave the train, otherwise we should have found him in it."
"Granted. But the question is, when did he get in and how did he get out? We know from the evidence of the passengers that the train never stopped for one instant between London Bridge station and Anerley; that all compartments were alight up to the time it passed Honor Oak Park; that nobody abroad of it heard a sound of a pistol-shot; that the assassin could not have crept along the footboard and got into some other compartment, for all were so densely crowded that half a dozen people were
standing in each, so he could not have entered without somebody making room for him to open the door and get in. No such thing happened, no such thing could happen, without a dozen or more people being aware of it; so the idea of a confederate may be dismissed without a thought. The unmarked surface of the snow shows that nobody alighted, was thrown out, or fell out between the two points where the tragedy must have occurred; both windows were shut and both doors of the compartment locked when the train made its first stop; yet the fellow was gone. My dear chap, are you sure, are you really sure, that it isn't a case of suicide after all?"
Cleek gave his shoulders a lurch and smiled indulgently.
"My dear Mr. Narkom," he said, "the position of the revolver in the dead man's hand ought, as I pointed out to you, to settle that question, even if there were no other discrepancies. In the natural order of things, a man who had just put a bullet into his own brain would, if he were sitting erect, as Lord Stavornell was, drop the revolver in the spasmodic opening and shutting of the hands in the final convulsion; but, if he retained any sort of a hold upon it, be sure his forefinger would be in the loop of the trigger. He wouldn't be holding the weapon backward, so to speak, with the cylinder against the ball of his thumb and the hammer against the base of the middle finger. If he had held it that way he simply couldn't have shot himself if he had tried. Then, if you didn't remark it, there was no scorch of powder upon the face, for another thing; and, for a third, the bullet-hole was between the eyes, a most unlikely target for a man bent upon blowing out his own brains; the temple or the roof of the mouth are the points to which natural impulse——" He stopped and laid a sharp, quick-shutting hand on the shoulder of one of the two men who were operating the car. "Turn back!" he exclaimed. "Reverse the action, and go back a dozen yards or so."