‘Did you not tell me of some scandal in the past? He was exonerated, you said. But suppose, after all, it had been true? In English public life there must be no scandal. If this were raked up and proved against him now—goodbye to his political career. We will suppose that he was being blackmailed, and the price asked was the submarine plans.’
‘But the man’s a black traitor!’ I cried.
‘Oh no, he is not. He is clever and resourceful. Supposing, my friend, that he copied those plans, making—for he is a clever engineer—a slight alteration in each part which will render them quite impractible. He hands the faked plans to the enemy’s agent—Mrs Conrad, I fancy; but in order that no suspicion of their genuineness may arise, the plans must seem to be stolen. He does his best to throw no suspicion on anyone in the house, by pretending to see a man leaving the window. But there he ran up against the obstinacy of the Admiral. So his next anxiety is that no suspicion shall fall on Fitzroy.’
‘This is all guesswork on your part, Poirot,’ I objected.
‘It is psychology, mon ami. A man who had handed over the real plans would not be overscrupulous as to who was likely to fall under suspicion. And why was he so anxious that no details of the robbery should be given to Mrs Conrad? Because he had handed over the faked plans earlier in the evening, and did not want her to know that the theft could only have taken place later.’
‘I wonder if you are right,’ I said.
‘Of course I am right. I spoke to Alloway as one great man to another—and he understood perfectly. You will see.’
IV
One thing is quite certain. On the day when Lord Alloway became Prime Minister, a cheque and a signed photograph arrived; on the photograph were the words: ‘To my discreet friend, Hercule Poirot—from Alloway.’
I believe that the Z type of submarine is causing great exultation in naval circles. They say it will revolutionize modern naval warfare. I have heard that a certain foreign power essayed to construct something of the same kind and the result was a dismal failure. But I still consider that Poirot was guessing. He will do it once too often one of these days.
The Third-Floor Flat
I
‘Bother!’ said Pat.
With a deepening frown she rummaged wildly in the silken trifle she called an evening bag. Two young men and another girl watched her anxiously. They were all standing outside the closed door of Patricia Garnett’s flat.
‘It’s no good,’ said Pat. ‘It’s not there. And now what shall we do?’
‘What is life without a latchkey?’ murmured Jimmy Faulkener.
He was a short, broad-shouldered young man, with good-tempered blue eyes.
Pat turned on him angrily. ‘Don’t make jokes, Jimmy. This is serious.’
‘Look again, Pat,’ said Donovan Bailey. ‘It must be there somewhere.’
He had a lazy, pleasant voice that matched his lean, dark figure.
‘If you ever brought it out,’ said the other girl, Mildred Hope.
‘Of course I brought it out,’ said Pat. ‘I believe I gave it to one of you two.’ She turned on the men accusingly. ‘I told Donovan to take it for me.’
But she was not to find a scapegoat so easily. Donovan put in a firm disclaimer, and Jimmy backed him up.
‘I saw you put it in your bag, myself,’ said Jimmy.
‘Well, then, one of you dropped it out when you picked up my bag. I’ve dropped it once or twice.’
‘Once or twice!’ said Donovan. ‘You’ve dropped it a dozen times at least, besides leaving it behind on every possible occasion.’
‘I can’t see why everything on earth doesn’t drop out of it the whole time,’ said Jimmy.
‘The point is—how are we going to get in?’ said Mildred.
She was a sensible girl, who kept to the point, but she was not nearly so attractive as the impulsive and troublesome Pat.
All four of them regarded the closed door blankly.
‘Couldn’t the porter help?’ suggested Jimmy. ‘Hasn’t he got a master key or something of that kind?’
Pat shook her head. There were only two keys. One was inside the flat hung up in the kitchen and the other was—or should be—in the maligned bag.