"Wait! Wait!"

It was a voice from the end of the platform. The guard turned with a smile to see who called on a train to wait. An old gentleman in silk stockings and gaiters, with long white hair flowing under the broad brim of a low-crowned hat, came panting to the only door that was still open.

"Quick, sir, it's moving; in with you!"

"Mr. Christian!" cried Greta, and throwing her arms about him, she drew him into the carriage. Then the train began to move away.

At that instant another train—the local train from Kentish Town and Hendon—steamed up to the opposite side of the platform. Before it had stopped two men leaped out. They were the two police-sergeants. Instantly—simultaneously—a man burst through the barrier and ran on to the platform from the street. He was bareheaded, and his face was ghastly white. In one moment the police-sergeants had laid hands upon him. The train to the north had not yet cleared the platform. He saw it passing out. He took hold of the hands by which he was held and threw them off, as if their grasp had been the grasp of a child. Then he bounded away toward the retreating train. It was now moving rapidly. It was gone; it was swallowed up in the dark mouth beyond, and the man stood behind, bareheaded, dripping with perspiration, yet white as ashes, his clothes awry, the collar of his frieze ulster torn away, and a strip of red flannel lining exposed.

It was Paul Ritson.

The police-sergeants hurried up with the re-enforcement of two porters to recover their man. But he was quiet enough now. He did not stir a muscle when they handcuffed him. He looked around with vague, vacant eyes, hardly seeming to realize where he was or what was being done with him. His frenzy was gone.

They led him down the platform. Hugh Ritson was standing on the spot where Greta had left him one minute before. When the company neared that spot the prisoner stopped. He looked across at Hugh Ritson in silence, and for an instant the dazed look died off his face. Then he turned his head aside, and allowed himself to be led quietly away.


CHAPTER XXI.