‘Yes. But I doubt if she would have had the knowledge or the constructiveness to do it the way it was done. The cunning of that class of mania is usually very simple and obvious. And I am almost certain she would have chosen a more spectacular method.’
‘But she is a possibility?’ Poirot insisted.
> ‘Yes,’ admitted Gerard.
‘And afterwards—when the deed was done? Do you think the rest of the family knew who had done it?’
‘They know!’ said Colonel Carbury unexpectedly. ‘If ever I came across a bunch of people who had something to hide—these are they! They’re putting something over all right.’
‘We will make them tell us what it is,’ said Poirot.
‘Third degree?’ said Colonel Carbury.
‘No.’ Poirot shook his head. ‘Just ordinary conversation. On the whole, you know, people tell you the truth. Because it is easier! Because it is less strain on the inventive faculties! You can tell one lie—or two lies—or three lies—or even four lies—but you cannot lie all the time. And so—the truth becomes plain.’
‘Something in that,’ agreed Carbury.
Then he said bluntly: ‘You’ll talk to them, you say? That means you’re willing to take this on.’
Poirot bowed his head.
‘Let us be very clear about this,’ he said. ‘What you demand, and what I undertake to supply, is the truth. But mark this, even when we have got the truth, there may be no proof. That is to say, no proof that would be accepted in a court of law. You comprehend?’
‘Quite,’ said Carbury. ‘You satisfy me of what really happened. Then it’s up to me to decide whether action is possible or not—having regard to the international aspects. Anyway, it will be cleared up—no mess. Don’t like mess.’
Poirot smiled.
‘One thing more,’ said Carbury. ‘I can’t give you much time. Can’t detain these people here indefinitely.’
Poirot said quietly:
‘You can detain them twenty-four hours. You shall have the truth by tomorrow night.’
Colonel Carbury stared hard at him.
‘Pretty confident, aren’t you?’ he asked.
‘I know my own ability,’ murmured Poirot.
Rendered uncomfortable by this un-British attitude, Colonel Carbury looked away and fingered his untidy moustaches.
‘Well,’ he mumbled, ‘it’s up to you.’
‘And if you succeed, my friend,’ said Dr Gerard, ‘you are indeed a marvel!’
Chapter 4
Sarah King looked long and searchingly at Hercule Poirot. She noted the egg-shaped head, the gigantic moustaches, the dandified appearance and the suspicious blackness of his hair. A look of doubt crept into her eyes. ‘Well, mademoiselle, are you satisfied?’
Sarah flushed as she met the amused ironical glance of his eyes.
‘I beg your pardon,’ she said awkwardly.
‘Du tout! To use an expression I have recently learnt, you give me the once-over, is it not so?’
Sarah smiled a little. ‘Well, at any rate, you can do the same to me,’ she said.
‘Assuredly. I have not neglected to do so.’