The man who now entered the room was a striking figure. Very tall, with a well-knit, athletic frame and a deeply bronzed face and neck, he dominated the assembly. Even Giraud seemed anaemic beside him. When I knew him better I realized that Gabriel Stonor was quite an unusual personality.

English by birth, he had knocked about all over the world. He had shot big game in Africa, travelled in Korea, ranched in California, and traded in the South Sea islands.

His unerring eye picked out M. Hautet. 'The examining magistrate in charge of the case? Pleased to meet you, sir. This is a terrible business. How's Mrs. Renauld? Is she bearing up fairly well? It must have been an awful shock to her.'

'Terrible, terrible' said M. Hautet. 'Permit me to introduce Monsieur Bex, our commissary of police, Monsieur Giraud of the Surete. This gentleman is Monsieur Hercule Poirot. Mr. Renauld sent for him, but he arrived too late to do anything to avert the tragedy. A friend of Monsieur Poirot's, Captain Hastings.'

Stonor looked at Poirot with some interest. 'Sent for you did he?'

'You did not know, then, that Monsieur Renauld contemplated calling in a detective?' interposed M. Bex.

'No, I didn't. But it doesn't surprise me a bit.'

'Why?'

'Because the old man was rattled. I don't know what it was all about. He didn't confide in me. We weren't on those terms. But rattled he was-and badly.'

'Hm!' said M. Hautet. 'But you have no notion of the cause?'

'That's what I said, sir.'

'You will pardon me, Monsieur Stonor, but we must begin with a few formalities. Your name?'

'Gabriel Stonor.'

'How long ago was it that you became secretary to Monsieur Renauld?'

'About two years ago, when he first arrived from South America. I met him through a mutual friend, and he offered me the post. A thundering good boss he was too.'

'Did he talk to you much about his life in South America?'

'Yes, a good bit.'

'Do you know if he was ever in Santiago?'

'Several times, I believe.'

'He never mentioned any special incident that occurred there-anything that might have provoked some vendetta against him?'

'Never.'

'Did he speak of any secret he had acquired while sojourning there?'

'Not that I can remember. Bug for all that, there was a mystery about him. I've never heard him speak of his boyhood, for instance, or of any incident prior to his arrival in South America. He was a French-Canadian by birth, I believe, but I've never heard him speak of his life in Canada. He could shut up like a clam if he wished.'

'So, as far as you know, he had secrets, and you can give us no clue as to any secret because of which he might have been murdered?'

'That's so.'

'Monsieur Stonor, have you ever heard the name of Duveen in connexion with Monsieur Renauld?'

'Duveen. Duveen.' He tried the name over thoughtfully. 'I don't think I have. And yet it seems familiar.'

'Do you know a lady, a friend of Monsieur Renauld's whose Christian name is Bella?'

Again Mr. Stonor shook his head. 'Bella Duveen? Is that the full name? It's curious. I'm sure I know it. But for the moment I can't remember in what connexion.'

The magistrate coughed. 'You understand, Monsieur Stonor-the case is like this. There must be no reservations. You might, perhaps, through a feeling of consideration for Madame Renauld-for whom, I gather, you have a great esteem and affection-you might-in fact!' said M. Hautet, getting rather tied up in his sentence 'there must absolutely be no reservations.'

Stonor stared at him, a dawning light of comprehension in his eyes.

'I don't quite get you' he said gently. 'Where does Mrs. Renauld come in? I've an immense respect and affection for that lady; she's a very wonderful and unusual type, but I don't quite see how my reservations or otherwise, could affect her?'

'But if this Bella Duveen should prove to have been something more than a friend to her husband?'

'Ah!' said Stonor. 'I get you now. But I'll bet my bottom dollar that you're wrong. The old man never so much as looked at a petticoat. He just adored his own wife. They were the most devoted couple I know.'

M. Hautet shook his head gently. 'Monsieur Stonor, we hold absolute proof-a love-letter written by this Bella to Monsieur Renauld, accusing him of having tired of her. Moreover, we have further proof that, at the time of his death, he was carrying on an intrigue with a Frenchwoman, a Madame Daubreuil, who rents the adjoining villa.'

The secretary's eyes narrowed. 'Hold on sir. You're barking up the wrong tree. I knew Paul Renauld. What you've just been saying is plumb impossible. There's some other explanation.'

The magistrate shrugged his shoulders. 'What other explanation could there be?'

'What leads you to think it was a love affair?'

'Madame Daubreuil was in the habit of visiting him here in the evenings. Also, since Monsieur Renauld came to the Villa Genevieve, Madame Daubreuil has paid large sums of money into the bank in notes. In all, the amount totals four thousand pounds of your English money.'

'I guess that's right,' said Stonor quietly. 'I transmitted him those sums in notes at his request. But it wasn't an [missing].

'What else could it be?'

'Blackmail,' said Stonor sharply, bringing down his hand with a slam on the table. 'That's what it was.'

'Ah!' cried the magistrate, shaken in spite of himself.

'Blackmail,' repeated Stonor. 'The old man was being bled-and at a good rate too. Four thousand in a couple of months. I told you just now there was a mystery about Renauld. Evidently this Madame Daubreuil knew enough of it to put the screw on.'

'It is possible,' the commissary cried exaltedly. 'Decidedly it is possible.'

'Possible?' roared Stonor. 'It's certain. Tell me, have you asked Mrs. Renauld about this love-affair stunt of yours?'

'No, monsieur. We did not wish to occasion her any distress if it could reasonably be avoided.'

'Distress? Why, she'd laugh in your face. I tell you, she and Renauld were a couple in a hundred.'

'Ah, that reminds me of another point,' said M. Hautet. 'Did Monsieur Renauld take you into his confidence at all as to the dispositions of his will?'

'I know all about it-took it to the lawyers for him after he'd drawn it out. I can give you the name of his solicitors if you want to see it. They've got it there. Quite simple. Half in trust to his wife for her lifetime, the other half to his son. A few legacies. I rather think he left me a thousand.'

'When was this will drawn up?'

'Oh, about a year and a half ago.'

'World it surprise you very much Monsieur Stonor, to hear that Monsieur Renauld had made another will, less than a fortnight ago?'

Stonor was obviously very much surprised. 'I'd no idea of it. What's it like?'

'The whole of his vast fortune is left unreservedly to his wife. There is no mention of his son.'

Mr. Stonor gave vent to a prolonged whistle. 'I call that rather rough on the lad. His mother adores him of course, but to the world at large it looks rather like a want of confidence on his father's part. It will be rather galling to his pride. Still, it all goes to prove what I told you, that Renauld and his wife were on first-rate terms.'

'Quite so, quite so' said M. Hautet. 'It is possible we shall have to revise our ideas on several points. We have, of course, cabled to Santiago, and are expecting a reply from there any minute. In all probability, everything will then be perfectly clear and straightforward. On the other hand, your suggestion of blackmail is true, Madame Daubreuil ought to be able to give us valuable information.'

Poirot interjected a remark: 'Monsieur Stonor, the English chauffeur, Masters, had he been long with Monsieur Renauld?'

'Over a year.'

'Have you any idea whether he has ever been in South America?'

'I'm quite sure he hasn't. Before coming to M. Renauld he had been for many years with some people in Gloucestershire whom I know well.'

'In fact, you can answer for him as being above suspicion?'

'Absolutely.'

Poirot seemed somewhat crestfallen.

Meanwhile the magistrate had summoned Marchaud.

'My compliments to Madame Renauld, and I should be glad to speak to her for a few minutes. Beg her not to disturb herself. I will wait upon her upstairs.'

Marchaud saluted and disappeared.

We waited some minutes, and then, to our surprise, the door opened, and Mrs. Renauld, deathly pale in her heavy mourning, entered the room.

M. Hautet brought forward a chair, uttering vigorous protestations, and she thanked him with a smile. Stonor was holding one hand of hers in his with an eloquent sympathy.

Words evidently failed him. Mrs. Renauld turned to M. Hautet.

'You wish to ask me something?'

'With your permission, madame. I understand your husband was a French-Canadian by birth. Can you tell me anything of his youth or upbringing?'

She shook her head. 'My husband was always very reticent about himself, monsieur. He came from the North-West, I know, but I fancy that he had an unhappy childhood, for he never cared to speak of that time. Our life was lived entirely in the present and the future.'

'Was there any mystery in his past life?'

Mrs. Renauld smiled a little and shook her head. 'Nothing so romantic I am sure, monsieur.' M. Hautet also smiled.

'True, we must not permit ourselves to get melodramatic. There is one thing more-' He hesitated.

Stonor broke in impetuously: 'They've got an extraordinary idea into their heads, Mrs. Renauld. They actually fancy that Mr. Renauld was carrying on an intrigue with a Madame Daubreuil who it seems, lives next door.'

The scarlet colour flamed into Mrs. Renauld's cheeks. She flung her head up, then bit her lip, her face quivering. Stonor stood looking at her in astonishment but M. Bex leaned forward and said gently: 'We regret to cause you pain, madame, but have you any reason to believe that Madame Daubreuil was your husband's mistress?'

With a sob of anguish, Mrs. Renauld buried her face in her hands. Her shoulders heaved convulsively. At last she lifted her head and said brokenly: 'She may have been.'

Never, in all my life, have I seen anything to equal the blank amazement on Stonor's face. He was thoroughly taken aback.