The doctor nodded. He looked around as though to be sure that none of that anxious crowd outside could overhear. “There’s no question of heart disease here,” he explained. “The man has been murdered!” The station-master was horrified,--horrified and blankly incredulous. “Murdered!” he repeated. “Why, it’s impossible! There was no one else on the train except the attendant--not a single other person. All my advices said one passenger only.” The doctor touched the man’s coat with his finger, and the station-master saw what he had not seen before,--saw what made him turn away, a little sick. He was a strong man, but he was not used to this sort of thing, and he had barely recovered yet from the first shock of finding himself face to face with a dead man. Outside, the crowd upon the platform was growing larger. White faces were being pressed against the windows at the lower end of the saloon. “There is no question about the man having been murdered,” the doctor said, and even his voice shook a little. “His own hand could never have driven that knife home. I can tell you, even, how it was done. The man who stabbed him was in the compartment behind there, leaned over, and drove this thing down, just missing the shoulder. There was no struggle or fight of any sort. It was a diabolical deed!” “Diabolical indeed!” the station-master echoed hoarsely. “You had better give orders for us to be shunted down on to a siding just as we are,” the doctor continued, “and send one of your men to telephone to Scotland Yard. Perhaps it would be as well, too, not to touch those papers until some one comes. See that the attendant does not go home, or the guard. They will probably be wanted to answer questions.” The station-master stepped out to the platform, summoned an inspector, and gave a few brief orders. Slowly the saloon was backed out of the station again on to a neglected siding, a sort of backwater for spare carriages and empty trucks,--an ignominious resting place, indeed, after its splendid journey through the night. The doors at both ends were closed and two policemen placed on duty to guard them. The doctor and the station-master seated themselves out of sight of their gruesome companion, and the station-master told all that he knew about the despatch of the special and the man who had ordered it. The attendant, who still moved about like a man in a dream, brought them some brandy and soda and served them with shaking hand. They all three talked together in whispers, the attendant telling them the few incidents of the journey down, which, except for the dead man’s nervous desire for solitude, seemed to possess very little significance. Then at last there was a sharp tap at the window. A tall, quietly dressed man, with reddish skin and clear gray eyes, was helped up into the car. He saluted the doctor mechanically. His eyes were already travelling around the saloon.