He himself was conscious of a sense of nausea； a giddiness which was almost overmastering。 This was a terrible thing to face without a second's warning。 He had not the slightest doubt but that the man who was seated at the table was dead！
At such an hour there were only a few people upon the platform； and two stalwart station policemen easily kept back the loiterers whose curiosity had been excited by the arrival of the special。 A third took up his position with his back to the entrance of the saloon； and allowed no one to enter it till the return of the station…master； who had gone for a doctor。 The little crowd was completely mystified。 No one had the slightest idea of what had happened。 The attendant was besieged by questions； but he was sitting on the step of the car； in the shadow of a policeman； with his head buried in his hands； and he did not once look up。 Some of the more adventurous tried to peer through the windows at the lower end of the saloon。 Others rushed off to interview the guard。 In a very few minutes； however； the station…master reappeared upon the scene； accompanied by the doctor。 The little crowd stood on one side and the two men stepped into the car。
The doctor proceeded at once with his examination。 Mr。 Hamilton Fynes； this mysterious person who had succeeded； indeed； in making a record journey； was leaning back in the corner of his seat； his arms folded； his head drooping a little； but his eyes still fixed in that unseeing stare。 His body yielded itself unnaturally to the touch。 For the main truth the doctor needed scarcely a glance at him。
〃Is he dead？〃 the station…master asked。
〃Stone…dead！〃 was the brief answer。
〃Good God！〃 the station…master muttered。 〃Good God！〃
The doctor had thrown his handkerchief over the dead man's face。 He was standing now looking at him thoughtfully。
〃Did he die in his sleep； I wonder？〃 the station…master asked。 〃It must have been horribly sudden！ Was it heart disease？〃
The doctor did not reply for a moment。 He seemed to be thinking out some problem。
〃The body had better be removed to the station mortuary；〃 he said at last。 〃Then； if I were you； I should have the saloon shunted on to a siding and left absolutely untouched。 You had better place two of your station police in charge while you telephone to Scotland Yard。〃
〃To Scotland Yard？〃 the station…master exclaimed。
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 attendantnot 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 thought 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。
〃Inspector Jacks from Scotland Yard； sir；〃 he announced。 〃I have another man outside。 If you don't mind； we'll have him in。〃
〃By all means；〃 the station…master answered。 〃I am afraid that you will find this rather a serious affair。 We have left everything untouched so far as we could。〃
The second detective was assisted to clamber up into the car。 It seemed； however； as though the whole force of Scotland Yard could scarcely do much towards elucidating an affair which； with every question which was asked and answered； grew more mysterious。 The papers upon the table before the dead man were simply circulars and prospectuses of no possible importance。 His suitcase contained merely a few toilet necessaries and some clean linen。 There was not a scrap of paper or even an envelope of any sort in his pockets。 In a small leather case they found a thousand dollars in American notes； five ten…pound Bank of England notes； and a single visiting card on which was engraved the name of Mr。 Hamilton Fynes。 In his trousers pocket was a handful of gold。 He had no other personal belongings of any sort。 The space between the lining of his coat and the material itself was duly noticed； but it was empty。 His watch was a cheap one； his linen unmarked； and his clothes bore only the name of a great New York retail establishment。 He had certainly entered the train alone； and both the guard and attendant were ready to declare positively that no person could have been concealed in it。 The engine…driver； on his part； was equally ready to swear that not once from the moment when they had steamed out of Liverpool Station until they had arrived within twenty miles of London； had they travelled at less than forty miles an hour。 At Willington he had found a signal against him which had brought him nearly to a standstill； and under the regulations he had passed through the station at ten miles an hour。 These were the only occasions； however； on which he had slackened speed at all。 The train attendant； who was a nervous man； began to shiver again and imagine unmentionable things。 The guard； who had never left his own brake； went home and dreamed that his effigy had been added to the collection of Madame Tussaud。 The reporters were the only people who were really happy； with the exception； perhaps of Inspector Jacks； who had a weakness for a difficult case。
Fifteen miles north of London； a man lay by the roadside in the shadow of a plantation of pine trees； through which he had staggered only a few minutes ago。 His clothes were covered with dust； he had lost his cap； and his trousers were cut about the knee as though from a fall。 He was of somewhat less than medium height； dark； slender； with delicate features； and hair almost coal black。 His face； as he moved slowly from side to side upon the grass； was livid with pain。 Every now and then he raised himself and listened。 The long belt of main road； which passed within a few feet of him； seemed almost deserted。 Once a cart came lumbering by； and the man who lay there； watching； drew closely back into the shadows。 A youth on a bicycle passed； singing to himself。 A boy and girl strolled by； arm in arm； happy； apparently； in their profound silence。 Only a couple of fields away shone the red and green lights of the railway track。 Every few minutes the goods…trains went rumbling over the metals。 The man on the ground heard them with a shiver。 Resolutely he kept his face turned in the opposite direction。 The night mail went thundering northward； and he clutched even at the nettles which grew amongst the grass where he was crouching； as though filled with a sudden terror。 Then there was silence once moresilence which became deeper as the hour approached midnight。 Passers…by were fewer； the birds and animals came out from their hiding places。 A rabbit scurried across the road； a rat darted down the tiny stream。 Now and then birds moved in the undergrowth； and the man； who was struggling all the time with a deadly faintness； felt the silence grow more and more oppressive。 He began even to wonder where he was。 He closed his eyes。 Was that really the tinkling of a guitar； the perfume of almond and cherry blossom； floating to him down the warm wind？ He began to lose himself in dreams until he realized that actual unconsciousness was close upon him。 Then he set his teeth tight and clenched his hands。 Away in the distance a faint； long…expected sound came travelling to his ears。 At last； then； his long wait was over。 Two fiery eyes were stealing along the lonely road。 The throb of an engine was plainly audible。 He staggered up； swaying a little on his feet； and holding out his hands。 The motor car came to a standstill before him； and the man who was driving it sprang to the ground。 Words passed between them rapidly；questions and answers；the questions of an affectionate servant； and the answers of a man fighting a grim battle for consciousness。 But these two spoke in a language of their own； a language which no one who p