But up-train after up-train came in, and her mistress did not appear. After the arrival of the last train, she left the luggage where it was, and went to a hotel near the station for the night. Thi morning she read of the tragedy, and returned to town by the first available train.' 'Is there nothing to account for your daughter's sudden change of plan?' 'Well, there is this: According to Jane Mason, at Bristol, Flosie

was no longer alone in her carriage. There was a man in it who stood looking out of the farther window so that she could not see his face.' 'The train was a corridor one, of course?' 'Yes.' 'Which side was the corridor?' 'On the platform side. My daughter was standing in the corridor as she talked to Mason.' 'And there is no doubt in your mind - excuse me!' He got up, and carefully straightened the inkstand which was a little askew. 'e vous demande pardon,' he continued, re-seating himself. 'It affects my nerves to see anything crooked. Strange, is it not? I was saying, monsieur, that there is no doubt in your mind as to this probably unexpected meeting being the cause of your daughter's sudden change of plan?' 'It seems the only reasonable supposition.' 'You have no idea as to who the gentleman in question might be?' The millionaire hesitated for a moment, and then replied: 'No - I do not know at all.' 'Now - as to the discovery of the body?' 'It was discovered by a young naval officer who at once gave the alarm. There was a doctor on the train. He examined the body.

She had been first chloroformed, and then stabbed. He gave it as his opinion that she had been dead about four hours, so it must have been done not long after leaving Bristol - probably between there and Weston, possibly between Weston and Taunton.' 'And the jewel-case?' 'The jewel-case, M. Poirot, was missing.' 'One thing more, monsieur. Your daughter's fortune - to whom does it pass at her death?' 'Flossie made a will soon after her m!lrriage, leaving everything to her husband.' He hesitated for a minute, and then went on: 'I may as well tell you, Monsieur Poirot, that I regard my son-in-law as an unprincipled scoundrel, and that, by my advice, my daughter was on the eve of freeing herself from him by legal means - no difficult matter. I settled her money upon her in such a way that

he could not touch it during her lifetime, but although they have lived entirely apart for some years, she had frequently acceded to his demands for money, rather than face an open scandal. However, I was determined to put an end to this. At last Flossie agreed, and my lawyers were instructed to take proceedings.' 'And where is Monsieur Carrington?' 'In town. I believe he was away in the country yesterday, but he returned last night.' Poirot considered a little while. Then he said: 'I think that is all, monsieur.' 'You would like to see the maid, Jane Mason?' 'If you please.' Halliday rang the bell, and gave a short order to the footman.

A few minutes later Jane Mason entered the room, a respectable, hard-featured woman, as emotionless in the face of tragedy as only a good servant can be.

'You will permit me to put a few questions? Your mistress, she was quite as usual before starting yesterday morning? Not excited or flurried?' 'Oh no, sir' 'But at Bristol she was quite different?' 'Yes, sir, regular upset - so nervous she didn't seem to know what she was saying.' 'What did she say exactly?' 'Well, sir, as near as I can remember, she said: "Mason, I've got to alter my plans. Something has happened - I mean, I'm not getting out here after all. I must go on. Get out the luggage and put it in the cloakroom; then have some tea, and wait for me in the station." ' "Wait for you here, ma'am?" I asked.

'"Yes, yes. Don't leave the station. I shall return by a later train. I don't know when. It mayn't be until quite late.' ' "Very well, ma'am," I says. It wasn't my place to ask questions, but I thought it very strange.' 'It was unlike your mistrcs, eh?' 'Very unlike her, sir.' 'What did you think?'

'Well, sir, I thought it was to do with the gentleman in the carriage. She didn't speak to him, but she turned round once or twice as though to ask him if she was doing right.'

'But you didn't see the gentleman's face?'

'No, sir; he stood with his back to me all the time.'

'Can you describe him at all?'

'He had on a light fawn overcoat, and a travelling-cap. He was tall and slender, like, and the back of his head was dark.'

You didn't know him?'

'Oh no, I don't think so, sir.'

'It was not your master, Mr Carrington, by any chance?' Mason looked rather startled.

'Oh, I don't think so, sirl' 'But you are not sure?'

'It was about the master's build, sir - but I never thought of it being him. We so seldom saw him… I couldn't say it va.m't himl'

Poirot picked up a pin from the carpet, and frowned at it severely; then he continued: 'Would it be possible for the man to have entered the train at Bristol before you reached the carriage?' Mason considered.

'Yes, sir, I think it would. My compartment was very crowded, and it was some minutes before I could get out - and then there was a very large crowd on the platform, and that delayed me too.

But he'd only have had a minute or two to speak to the mistress, that way. I took it for granted that he'd come along the corridor.' 'That is more probable, certainly?

He paused, still frowning.

'You know how the mistress was dressed, sir?'

'The papers give a few details, but I would like you to confirm them.'

'She was wearing a white fox fur toque, sir, with a white spotted veil, and a blue frieze coat and skirt - the shade of blue they call electric.'

'H'm, rather striking.'

'Yes,' remarked Mr Halliday. 'Inspector Japp is in hopes that that may help us to fix the spot where the crime took place.

Anyone who saw her would remember her.' 'Prdcisd,-nentl - Thank you, mademoiselle.' The maid left the room.

'Wclll' Poirot got up briskly. 'That is all I can do here - except, monsieur, that I would ask you to tell me everything - but everythingl' 'I have done so.' 'You are sure?' 'Absolutely.' 'Then there is nothing more to be aid. I must decline the case.' 'Why?' 'Because you have not been frank with me.' 'I assure you - ' 'No, you are keeping something back.' There was a moment'a pause, and then Halliday drew a paper from his pocket and handed it to my friend.

'I guess that'a what you're after, Monsieur Poirot - though how you know about it fairly gets my goatl' Poirot smiled, and unfolded the paper. It was a letter written in thin sloping handwriting. Poirot read it aloud.

'ChOre Madame, It is with infinite pleasure that I look forward to the felicity of meeting you again. After your so amiable reply to my letter, I can hardly restrain my impatience. I have never forgotten thoe days in Paris. It is most cruel that you should be leaving London tomorrow. However, before very long, and perhaps sooner than you think, I shall have the joy of beholding once more the lady whose image has ever reigned supreme in my heart.

Believe, chore madame, all the assurance of my most devoted and unaltered sentiment - Armand de la Rochefour.'

Poirot handed the letter back to Halliday with a bow.

'I fancy, monsieur, that you did not know that your daughter intended renewing her acquaintance with the Count de la Rochefour?'

'It came as a thunderbolt to me! I found this letter in my daughter's handbag. As you probably know, Monsieur Poirot, this so-called count is an adventurer of the worst type.'

Poirot nodded.

'But I want to know how you knew of the existence of thi letter?'

My friend smiled. 'Monsieur, I did not. But to track footmarlm and recognize cigarette-ash is not sufficient for a detective. He must also be a good psychologist! I knew that you disliked and mistrusted your son-in-law. He benefits by your daughter's death; the maid's description of the mysterious man bears a sufficient resemblance to him. Yet you are not keen on his trackl Why?