'Major Norman has a map of Northern France if you would like to study it? '
Poirot shook his head impatiently.
'But no, but no! Leave me, my friend. See you, to think, the stomach and the brain must be in harmony. Laverguier has a method most excellent for averting the mal de mer. You breathe in - and out slowly, so - turning the head from left to right and counting six between each breath.'
I left him to his gymnastic endeavours; and went on deck.
As we came slowly into Boulogne Harbour Poirot appeared, neat and smiling, and announced to me in a whisper that Laverguier's system had succeeded 'to a marvel!'
Japp's forefinger was still tracing imaginary routes on his map.
'Nonsense! The car started from Boulogne - here they branched off.
Now, my idea is that they transferred the Prime Minister to another car. See?'
'Well,' said the tall detective, 'I shall make for the seaports. Ten to one, they've smuggled him on board a ship.'
Japp shook his head. 'Too obvious. The order went out at once to close all the ports.'
The day was just breaking as we landed. Major Norman touched Poirot on the arm. 'There's a military car here waiting for you, sir.'
'Thank you, monsieur. But, for the moment, I do not propose to leave Boulogne.'
'What?'
'No, we will enter this hotel here, by the quay.'
He suited the action to the word, demanded and was accorded a private room. We three followed him, puzzled and uncomprehending.
He shot a quick glance at us. 'It is not so that the good detective should act, eh? I perceive your thought. He must be full of energy.
He must rush to and fro. He should prostrate himself on the dusty road and seek the marks of tyres through a little glass. He must gather up the cigarette-end, the fallen match? That is your idea, is it not?'
His eyes challenged us. 'But I - Hercule Poirot - tell you that it is not so! The true clues are within - here!' He tapped his forehead. 'See you, I need not have left London. It would have been sufficient for me to sit quietly in my rooms there. All that matters is the little grey cells within. Secretly and silently they do their part, until suddenly I call for a map, and I lay my finger on a spot - so - and I say: the Prime Minister is there! And it is so! With method and logic one can accomplish anything! This frantic rushing to France was a mistake it is playing a child's game of hide-and-seek. But now, though it may be too late, I will set to work the right way, from within. Silence, my friends, I beg of you.'
And for five long hours the little man sat motionless, blinking his eyelids like a cat, his green eyes nickering and becoming steadily greener and greener. The Scotland Yard man was obviously contemptuous, Major Norman was bored and impatient, and I myself found the time pass with wearisome slowness.
Finally, I got up and strolled as noiselessly as I could to the window.
The matter was becoming a farce. I was secretly concerned for my friend. If he failed, I would have preferred him to fail in a less ridiculous manner. Out of the window I idly watched the daily leave boat, belching forth columns of smoke, as she lay alongside the quay.
Suddenly I was aroused by Poirot's voice close to my elbow.
'Mes amis, let us start!'
I turned. An extraordinary transformation had come over my friend.
His eyes were flickering with excitement, his chest was swelled to the uttermost.
'I have been an imbecile, my friends! But I see daylight at last.'
Major Norman moved hastily to the door. 'I'll order the car.'
'There is no need. I shall not use it. Thank Heaven the wind has fallen.'
'Do you mean you are going to walk, sir?'
'No, my young friend. I am no St Peter. I prefer to cross the sea by boat.'
'To cross the sea?'
'Yes. To work with method, one must begin from the beginning. And the beginning of this affair was in England. Therefore, we return to England.'
II
At three o'clock, we stood once more upon Charing Cross platform.
To all our expostulations, Poirot turned a deaf ear, and reiterated again and again that to start at the beginning was not a waste of time, but the only way. On the way over, he had conferred with Norman in a low voice, and the latter had despatched a sheaf of telegrams from Dover.
Owing to the special passes held by Norman, we got through everywhere in record time. In London, a large police car was waiting for us, with some plain-clothes men, one of whom handed a typewritten sheet of paper to my friend. He answered my inquiring glance.
'A list of the cottage hospitals within a certain radius west of London. I wired for it from Dover.'
We were whirled rapidly through the London streets. We were on the Bath Road. On we went, through Hammersmith, Chiswick and Brentford. I began to see our objective. Through Windsor and on to Ascot. My heart gave a leap. Ascot was where Daniels had an aunt living. We were after him, then, not O'Murphy.
We duly stopped at the gate of a trim villa. Poirot jumped out and rang the bell. I saw a perplexed frown dimming the radiance of his face. Plainly, he was not satisfied. The bell was answered. He was ushered inside. In a few moments he reappeared, and climbed into the car with a short, sharp shake of his head. My hopes began to die down. It was past four now. Even if he found certain evidence incriminating Daniels, what would be the good of it, unless he could wring from someone the exact spot in France where they were holding the Prime Minister?
Our return progress towards London was an interrupted one. We deviated from the main road more than once, and occasionally stopped at a small building, which I had no difficulty in recognizing as a cottage hospital. Poirot only spent a few minutes at each, but at every halt his radiant assurance was more and more restored.
He whispered something to Norman, to which the latter replied:
'Yes, if you turn off to the left, you will find them waiting by the bridge.'
We turned up a side road, and in the failing light I discerned a second car, waiting by the side of the road. It contained two men in plain clothes. Poirot got down and spoke to them, and then we started off in a northerly direction, the other car following close behind.
We drove for some time, our objective being obviously one of the northern suburbs of London. Finally, we drove up to the front door of a tall house, standing a little back from the road in its own grounds.
Norman and I were left with the car. Poirot and one of the detectives went up to the door and rang. A neat parlourmaid opened it. The detective spoke.
'I am a police officer, and I have a warrant to search this house.'
The girl gave a little scream, and a tall, handsome woman of middle age appeared behind her in the hall.
'Shut the door, Edith. They are burglars, I expect.'
But Poirot swiftly inserted his foot in the door, and at the same moment blew a whistle. Instantly the other detectives ran up, and poured into the house, shutting the door behind them.
Norman and I spent about five minutes cursing our forced inactivity. Finally the door reopened, and the men emerged, escorting three prisoners - a woman and two men. The woman and one of the men were taken to the second car. The other man was placed in our car by Poirot himself.
'I must go with the others, my friend. But have great care of this gentleman. You do not know him, no? Eh bien, let me present to you. Monsieur O'Murphy!'
O'Murphy! I gaped at him open-mouthed as we started again. He was not handcuffed, but I did not fancy he would try to escape. He sat there staring in front of him as though dazed. Anyway, Norman and I would be more than a match for him.
To my surprise, we still kept a northerly route. We were not returning to London, then! I was much puzzled. Suddenly, as the car slowed down, I recognized that we were close to Hendon Aerodrome. Immediately I grasped Poirot's idea. He proposed to reach France by aeroplane.
It was a sporting idea, but, on the face of it, impracticable. A telegram would be far quicker. Time was everything. He must leave the personal glory of rescuing the Prime Minister to others.