That night in the seclusion of his comfortable room he wrote out a detailed account in code of his interview with the baroness, taking special care to emphasise the pleasure she had shown at the knowledge, that she could rely upon the British Secret Service to support her if necessary. He repeated her undertaking that she would confide everything she knew to a document, which she would hide inside a pedestal containing the naiad on the fountain; described the exact position. He stressed the fact that he had given his word that search would not be made for the papers unless any calamity befell her. He wrote of his meeting with von Strom, repeating almost word for word that which had been said. He then went on to tell of the events of the evening. Cousins, he knew, would already have reported that he had been invited by Colonel Schönewald to join his party at the Gourmania. He confined himself, therefore, to describing the manner in which Marlene Heckler, had cross-examined him and had attempted to trap him into a disclosure which might have ended in his real purpose in Berlin becoming known. The completed report was folded into as small a compass as possible, and sealed in an envelope. He placed it on the writing table, while he proceeded to collect and destroy the scraps of paper, he had used to enable him to transcribe his statement into code. He was meticulous in the care he took. Each was torn into minute fragments, after which he carried the heap to the fireplace, and set it alight.

While it was burning, he stood wondering where the best place would be to keep his report safe while he slept; came to the conclusion that the pocket of his pyjama jacket could hardly be bettered. His eyes strayed to the writing table and, at once, he stiffened apprehensively. As it was placed close to one of the windows, it was natural that the curtains should come within his range of vision. They were moving gently, to and fro as though swayed by a breeze. He had taken care to close both windows before commencing to write, this was therefore, to say the least of it, surprising and distinctly disturbing. It was impossible for the wind to flutter the curtains unless the window had opened. He remembered clearly fastening the catch. It could not have been blown open, therefore. But it would not be a very difficult matter for someone, provided with the necessary implements, to open it from the outside. There had been no sound, but an expert would be able to work quietly. Foster was convinced that a man had climbed up to the balcony, had possibly watched him while he wrote through a gap between the curtains, then, as soon as he had moved, had set to work on the window. But what was his object? The answer came to him immediately. The intruder was bent on stealing the letter. It still lay on the table, and quickly but noiselessly he walked across to pick it up.

As he was about to take possession of it, the curtains moved inwards and, from behind it, came a hand, broad and sinewy. The fingers were in the act of clutching the envelope, when Foster gripped the wrist with all his strength; at the same time he picked up the document with his other hand, pushing it into his pocket. A low but startled cry reached his ears. The intruder tried desperately to draw his hand away, but the Secret Service man held on. He endeavoured to sweep the curtain aside. The other, however, probably with the desire to escape recognition, kept it before his face. Foster immediately grappled with him, curtain and all, with the result that before long, it was torn from its fastenings. Then ensued a fierce struggle rendered more bizarre perhaps by the utter lack of sound from the Englishman’s opponent. To and fro they swayed, but his very anxiety to avoid showing his face proved the downfall of the fellow. The curtain had fallen more on him than on Foster, and he was rapidly becoming enveloped in its folds. They collided with a large pedestal, sending the ornaments it contained crashing to the floor. A moment later they themselves went over, making noise enough to rouse the whole hotel. Slowly but surely now Foster began to get the upper hand, wrapping his antagonist more and more in the curtain until, at last, he was rendered helpless and, indeed, must have been half suffocated by the thick heavy material enfolding his head. He was a burly fellow. The Secret Service man reflected that, if he had not had the curtain to assist him, the chances are that he would have had the worst of the struggle. Now that the other was unable to make further resistance the Secret Service man enveloped him more tightly, and sat on him to await events. He took from his pocket a letter he had that evening written to his sister, and threw it on the writing table. It was not long before there came a loud knocking, accompanied by the sound of excited voices. Foster left his human seat, strolled across the room, and opened the door. Outside was a dozen or more people all but two who were porters clad in night attire, the majority of them looking thoroughly startled. Eyes stared at the Englishman with the crumpled shirtfront, disordered hair, and general appearance of dishevelment; a babel of excited questions burst on his ears. He smiled at them, shook his head to indicate that he did not understand and stuck the monocle in his eye. The night porters pushed their way to the foreground. One had a little English.

‘Sare,’ he demanded with painful care, ‘vot is it dot are the – the pig noise make?’

For answer Foster pointed to the struggling bundle lying over by the window. Immediately there was a rush in the direction.

‘Take care!’ warned the Englishman. ‘He is a burglar. He might be armed.’

Apparently some of the invaders of his privacy understood English. They stopped, and began to draw back, passing on the information to the others as they did so. The result was that the man in the curtain was left severely alone, while a debate took place concerning him. The position had its amusing side. Foster was beginning to enjoy himself. After all, no harm had been done. Of course the fellow was a spy not a burglar. He had been instructed, no doubt, to watch the room. Possibly he had become curious, when he noticed that the light had been kept burning – Foster had not bothered to draw the curtains very closely before the other window – and had climbed up to see what the Englishman was doing. The letter must have interested him vastly. It suggested so many possibilities. The man, therefore, had resolved to obtain possession of it. All this was conjecture, of course. There were flaws in it. For instance it was curious that the intruder had possessed the means at hand of opening a locked window. The thought occurred to the Secret Service man that it might have been his intention to burgle his way into the room while the occupant slept, and search his clothing. It seemed very likely. Foster sighed. These Germans took an awful lot of convincing of the bona fides of a man once they had become suspicious of him. The debate went on with increasing vehemence. One of the porters went off to rouse the manager. For a moment the Englishman was forgotten. It was then that he received a surprise.

‘What was he after?’ breathed a voice in his ear.

Foster had some difficulty in preventing himself from starting. He looked hastily at the man standing close by his side. It was Sir Leonard Wallace – or rather the bronzed, jolly-looking naval officer with the round face whose person cloaked that of the Chief of the British Secret Service. Sir Leonard was clad in pyjamas of a loud pattern. Like others he had not bothered to don a dressing gown. There were women among the throng – they also wore nightdresses or pyjamas without any other covering, but nobody bothers about trifles like that in Berlin.

‘He climbed up,’ whispered Foster, bending down in order that his lips could not be seen moving, ‘opened the window, and was after the report I had written for you.’

‘You’d better give it to me now – safer for you. My room’s next door on the right, if you want me, knock three times on the wall.’

Foster withdrew the document from his pocket cautiously. It was transferred cleverly to Sir Leonard, who seemed to perform a conjuring trick. At all events it vanished right under Foster’s eyes. The chief moved away and joined in the discussion with gesturing of his right hand. The left as usual, was hidden in the pocket of his jacket.

The manager, the assistant manager, the porter who had gone to rouse them, and other members of the hotel staff hurried into the room. The burglar had not, up to that time, succeeded in freeing himself from the folds of the curtain. He was lying perfectly still now. Foster became rather alarmed lest he had suffocated. The manager, who spoke very good English, asked courteously to be told what had occurred. The Secret Service man decided that it was safer to tell the truth or, at least, give the semblance of truth to his story.

‘I had been writing a letter,’ he declared, and nodded at the envelope lying on the writing table. ‘I walked away, and was about to prepare myself for bed, when I noticed the curtain by that window blowing to and fro. As I had shut the window, that struck me as curious. I went to investigate and had almost reached the spot when a hand appeared. I caught hold of it. There was a bit of a fight, during which the curtain was pulled down, so I wrapped him in it. There he is.’

The story was translated to the others. Great indignation at the attempted burglary was expressed as well as admiration for the conduct of the Englishman. At the manager’s orders the curtain was unwound and the burglar released. He was blue in the face and semiconscious, but Foster recognised him at once. He could not forbear a little chuckle.

‘Well, well, well!’ he exclaimed. ‘If it isn’t my guide, philosopher and friend, Johann Schmidt. Protector of the lonely stranger by day, burglar by night.’ He picked up a carafe of water, and emptied the contents on the face of the half-suffocated man. ‘That should bring him properly round,’ he observed.

It did. Schmidt gasped and struggled to his feet, assisted by the porters, who kept a tight grip on his arms. Foster noticed, with a feeling of amusement, that the manager and assistant manager were regarding each with eyes, in which perplexity, embarrassment and annoyance struggled for mastery. Johann looked at the young man sheepishly, commenced to speak, but the manager immediately cut him short. He ordered him to be taken below, after which he turned to the Englishman, and apologised profusely for the burglary.

‘It is most terrible that such a thing in my hotel should happen. It is more terrible because he is a man that we have much trusted. Measures will be taken to see that he is punished. I will the police send for.’

‘Yes, do,’ murmured Foster.

‘In the morning you will a statement make to them – no?’

‘Yes. I shall be very glad to make a statement.’

The manager bowed. He requested the guests to return to their rooms, begging them not to be alarmed. They had a good deal to say about burglars in general and precautions that hotels should take against outrages of that kind, but eventually they all dispersed. The manager and his assistants bade Foster good night and followed them.

‘Don’t let him escape!’ the Englishman called out as they left the room.

He sat on the edge of the bed and chuckled softly to himself. He felt he would be greatly surprised if he saw or heard any more of Johann Schmidt. It had been a narrow escape, though. The thought of the consequences, if his report had fallen into the hands of the German secret police, caused him to grow serious. He smiled again, however, at recollection of the surprising appearance of Sir Leonard. It was comforting to know the chief was close by; it was more comforting to know that he had the document. Foster walked across to the fireplace and stamped the ashes of the papers he had burnt into dust. When that was done to his satisfaction, he undressed, and went to bed.

Anticipating that the early morning visitation of Johann Schmidt to his room would be conveniently forgotten by the hotel authorities who, he believed, were under the thumb of the police, he was surprised at breakfast to be told that certain officials were waiting outside his room to interview him. He at once gave orders for them to be shown in. When three solemn-looking gentlemen in frock coats entered, followed by two burly fellows, who were probably policemen in plain clothes, he became greatly interested. The frock-coated men looked more like doctors or lawyers than officials of the police. Apart from that, he was amazed that so many apparently important individuals should take the trouble to visit his room to interview him about a clumsy attempt at burglary.

‘Will you be seated, gentlemen?’ he invited. ‘I have just finished breakfast, and am quite at your disposal. Oh! I forgot. I hope you understand me. I’m afraid I cannot speak German.’

‘So!’ nodded the man who appeared the senior, a short, stout individual with grey hair, a mouth like a rat trap, and a pince nez. ‘It is well. We all the English speak.’

The three solemnly took chairs facing Foster, the other two men remaining by the door. The Secret Service agent grew puzzled. He was perplexed by the way in which they were staring at him. He looked from one to another wondering what was the reason for their intense scrutiny.

‘Your name,’ remarked the spokesman presently, ‘is Bernard Foster. That is so?’ Foster nodded. ‘You are an Englishman, residing in London, who on a holiday to Berlin have come. Correct?’

‘Quite correct, Mr Inspector or Superintendent, or whatever you are, but don’t you think we can dispense with all that formality? Everything possible must be known in Berlin about me by now. You have come for my statement, of course. Well, suppose you get out your notebook and pencil, and I’ll tell you all I know.’

The three men looked significantly at each other. The leader cleared his throat importantly.

‘I see that it is necessary to introduce mineself and these gentlemen to you, Herr Foster. I am not superintendant or inspector, as your poor mind leads you to think. I Doctor Keller am; these gentlemen Doctor Hagenow and Doctor Spraght are.’

Foster stared unbelievingly at them, then he sat back in his chair, and laughed heartily.

‘This is the first time,’ he chuckled, ‘that I have heard of doctors being sent to investigate a criminal case.’ Again came that significant look between the three men. Foster stopped laughing, and frowned. ‘Perhaps,’ he begged, ‘you will be good enough to tell me what it all means.’

Dr Keller addressed his colleagues in English.

‘You note, mine friends,’ he remarked, ‘the moods how quickly they change. There is first impatience, afterwards laughter, that is not controlled mit itself; then comes again the change. He frowns; a question he asks mit abruptness.’

Foster attempted to speak, but Dr Keller held up a pudgy hand.

‘One minute,’ he begged; ‘afterwards, all you wish you can talk. There have not to us yet been signs of violence,’ he resumed to the other two, ‘but the evidence that before us has been given by the porters and the guests and the man Schmidt himself cannot be ignored. The possibility of violence at any time must be considered – no doubt in him a tendency there must be. If agreed mit that we are, under restraint he must be put. Mine colleagues and I will to a home for mental rest send you. Every care and attention you will have, and perhaps someday quite well again you will be.’

As full realisation of the vile plot being hatched against him dawned on Foster, he felt sick with horror. These men had come to certify him insane, and have him confined in a mental asylum, perhaps for ever. Of course, the Supreme Marshal was the instigator. Though proofs of Foster’s harmlessness must have been put before him, he still insisted on regarding him with suspicion. Probably information had reached him of the happenings of the night. The fact that Foster had been writing at such a late hour had appeared to him significant, and he had decided to make certain that neither the Englishman nor the letter he had written would ever leave the country to spread any secret information they might possess. The Secret Service man threw a glance at the writing table. The letter for his sister still lay there. She would never receive it now. Thank God, the other, the vital document, was safe! Had Sir Leonard Wallace anticipated something like this happening when he had asked for it? Remembrance of the chief sent a sudden wave of hope through him; then again his spirits fell. What could even Sir Leonard do to save him from the living death of a mental home? If he had been an ordinary traveller the British embassy could have been informed. English doctors to examine him could have been insisted upon, his removal to England demanded. But he was a member of the British Secret Service, for whom no steps could be taken when in difficulties on foreign soil.