“Oh yes, I heard o’ that.”

“And did you hear that he turns out to be the man who jumped out of your train on the day of the attempted robbery?”

“Yes, I’ve heard o’ that too. They haven’t got him yet, I believe?”

“No, not yet; but I think we shall have him soon,” said Mr Sharp with a knowing glance; “I’ve heard rumours that lead me to think it would not be very surprising if we were to see him hanging about this station to-day or to-morrow. I’ve got a sort of decoy-duck to attract him,” continued Mr Sharp, chuckling, “in the shape of a retired East India doctor, who agrees to hang about on the condition that we keep a sharp eye on him and guard him well from any sudden attack.”

“You don’t mean that?” said the engine-driver in an earnest undertone.

Instead of replying, the superintendent suddenly left him and sauntered leisurely along the platform, with his eyes cast down and softly humming a popular air.

The act was so brusque and unlike Mr Sharp’s naturally polite character that John knew at once, as he said, that “something was up,” and looked earnestly along the platform, where he saw Thomson himself walking smartly about as if in search of some one. He carried a heavy-headed stick in his hand and looked excited; but not much more so than an anxious or late passenger might be.

Mr Sharp went straight towards the madman—still sauntering with his head down, however; and John Marrot could see that another man, whom he knew to be a detective, was walking round by the side of the platform, with the evident intention of taking him in rear. The moment Thomson set eyes on the superintendent he recognised him, and apparently divined his object in approaching, for he started, clenched his teeth, and grasped his stick. Mr Sharp instantly abandoned all attempt at concealment and ran straight at him. Thomson, probably deeming discretion the better part of valour, turned and fled. He almost ran into the arms of the detective, who now made sure of him, but he doubled like a hare and sprang off the platform on to the rails. Here one or two of the men who were engaged in washing or otherwise looking after empty carriages, seeing what was going on, at once sought to intercept the madman, but he evaded two or three, knocked down another, and, finding himself alongside of a detached engine which stood there with steam up ready to be coupled to its train, he leaped upon it, felled the driver who was outside the rail, oiling some of the machinery, seized the handle of the regulator and turned on full steam.

The driving-wheels revolved at first with such tremendous rapidity that they failed to “bite” and merely slipped on the rails. Thomson was engineer enough to understand why, and at once cut off part of the steam. Next moment he shot out of the station, and, again letting on full steam, rushed along the line like an arrow!

It chanced that the passenger-superintendent was on the platform at the time. That gentleman had everything connected with the traffic by heart. He saw that the points had been so set as to turn the run-away engine on to the down line, and in his mind’s eye saw a monster excursion train, which had started just a few minutes before, labouring slowly forward, which the light engine would soon overtake. A collision in a few minutes would be certain. In peculiar circumstances men are bound to break through all rules and regulations, and act in a peculiar way. Without a moment’s hesitation he ran to John Marrot and said in an earnest hurried voice—