Dr. van Heerden expected many things and was prepared for contingencies beyond the imagination of the normally minded, but he was not prepared to find in Oliva Cresswell a pleasant travelling-companion. When a man takes a girl, against her will, from a pleasant suite at the best hotel in London, compels her at the peril of death to accompany him on a motor-car ride in the dead of the night, and when his offence is a duplication of one which had been committed less than a week before, he not unnaturally anticipates tears, supplications, or in the alternative a frigid and unapproachable silence.

To his amazement Oliva was extraordinarily cheerful and talkative and even amusing. He had kept Bridgers at the door of the car whilst he investigated the pawn-broking establishment of Messrs. Rosenblaum Bros., and had returned in triumph to discover that the girl who up to then had been taciturn and uncommunicative was in quite an amiable mood.

"I used to think," she said, "that motor-car abductions were the invention of sensational writers, but you seem to make a practice of it. You are not very original, Dr. van Heerden. I think I've told you that before."

He smiled in the darkness as the car sped smoothly through the deserted streets.

"I must plead guilty to being rather unoriginal," he said, "but I promise you that this little adventure shall not end as did the last."

"It can hardly do that," she laughed, "I can only be married once whilst Mr. Beale is alive."

"I forgot you were married," he said suddenly, then after a pause, "I suppose you will divorce him?"

"Why?" she asked innocently.

"But you're not fond of that fellow, are you?"

"Passionately," she said calmly, "he is my ideal."

The reply took away his breath and certainly silenced him.

"How is this adventure to end?" she demanded. "Are you going to maroon me on a desert island, or are you taking me to Germany?"

"How did you know I am trying to get to Germany?" he asked sharply.

"Oh, Mr. Beale thought so," she replied, in a tone of indifference, "he reckoned that he would catch you somewhere near the coast."

"He did, did he?" said the other calmly. "I shall deny him that pleasure. I don't intend taking you to Germany. Indeed, it is not my intention to detain you any longer than is necessary."

"For which I am truly grateful," she smiled, "but why detain me at all?"

"That is a stupid question to ask when I am sure you have no doubt in your mind as to why it is necessary to keep you close to me until I have finished my work. I think I told you some time ago," he went on, "that I had a great scheme. The other day you called me a Hun, by which I suppose you meant that I was a German. It is perfectly true that I am a German and I am a patriotic German. To me even in these days of his degradation the Kaiser is still little less than a god."

His voice quivered a little, and the girl was struck dumb with wonder that a man of such intelligence, of such a wide outlook, of such modernity, should hold to views so archaic.

"Your country ruined Germany. You have sucked us dry. To say that I hate England and hate America--for you Anglo-Saxons are one in your soulless covetousness--is to express my feelings mildly."

"But what is your scheme?" she asked.

"Briefly I will tell you, Miss Cresswell, that you may understand that to-night you accompany history and are a participant in world politics. America and England are going to pay. They are going to buy corn from my country at the price that Germany can fix. It will be a price," he cried, and did not attempt to conceal his joy, "which will ruin the Anglo-Saxon people more effectively than they ruined Germany."

"But how?" she asked, bewildered.

"They are going to buy corn," he repeated, "at our price, corn which is stored in Germany."

"But what nonsense!" she said scornfully, "I don't know very much about harvests and things of that kind, but I know that most of the world's wheat comes from America and from Russia."

"The Russian wheat will be in German granaries," he said softly, "the American wheat--there will be no American wheat."

And then his calmness deserted him. The story of the Green Rust burst out in a wild flood of language which was half-German and half-English. The man was beside himself, almost mad, and before his gesticulating hands she shrank back into the corner of the car. She saw his silhouette against the window, heard the roar and scream of his voice as he babbled incoherently of his wonderful scheme and had to piece together as best she could his disconnected narrative. And then she remembered her work in Beale's office, the careful tabulation of American farms, the names of the sheriffs, the hotels where conveyances might be secured.

So that was it! Beale had discovered the plot, and had already moved to counter this devilish plan. And she remembered the man who had come to her room in mistake for van Heerden's and the phial of green sawdust he carried and Beale's look of horror when he examined it. And suddenly she cried with such vehemence that his flood of talk was stopped:

"Thank God! Oh, thank God!"

"What--what do you mean?" he demanded suspiciously. "What are you thanking God about?"

"Oh, nothing, nothing." She was her eager, animated self. "Tell me some more. It is a wonderful story. It is true, is it not?"

"True?" he laughed harshly, "you shall see how true it is. You shall see the world lie at the feet of German science. To-morrow the word will go forth. Look!" He clicked on a little electric light and held out his hand. In his palm lay a silver watch.

"I told you there was a code" (she was dimly conscious that he had spoken of a code but she had been so occupied by her own thoughts that she had not caught all that he had said). "That code was in this watch. Look!"

He pressed a knob and the case flew open. Pasted to the inside of the case was a circular piece of paper covered with fine writing.

"When you found that ticket you had the code in your hands," he chuckled; "if you or your friends had the sense to redeem that watch I could not have sent to-morrow the message of German liberation! See, it is very simple!" He pointed with his finger and held the watch half-way to the roof that the light might better reveal the wording. "This word means 'Proceed.' It will go to all my chief agents. They will transmit it by telegram to hundreds of centres. By Thursday morning great stretches of territory where the golden corn was waving so proudly to-day will be blackened wastes. By Saturday the world will confront its sublime catastrophe."

"But why have you three words?" she asked huskily.

"We Germans provide against all contingencies," he said, "we leave nothing to chance. We are not gamblers. We work on lines of scientific accuracy. The second word is to tell my agents to suspend operations until they hear from me. The third word means 'Abandon the scheme for this year'! We must work with the markets. A more favourable opportunity might occur--with so grand a conception it is necessary that we should obtain the maximum results for our labours."

He snapped the case of the watch and put it back in his pocket, turned out the light and settled himself back with a sigh of content.

"You see you are unimportant," he said, "you are a beautiful woman and to many men you would be most desirable. To me, you are just a woman, an ordinary fellow-creature, amusing, beautiful, possessed of an agile mind, though somewhat frivolous by our standards. Many of my fellow-countrymen who do not think like I do would take you. It is my intention to leave you just as soon as it is safe to do so unless----" A thought struck him, and he frowned.

"Unless----?" she repeated with a sinking heart in spite of her assurance.

"Bridgers was speaking to me of you. He who is driving." He nodded to the dimly outlined shoulders of the chauffeur. "He has been a faithful fellow----"

"You wouldn't?" she gasped.

"Why not?" he said coolly. "I don't want you. Bridgers thinks that you are beautiful."

"Is he a Hun, too?" she asked, and he jerked round toward her.

"If Bridgers wants you he shall have you," he said harshly.

She knew she had made a mistake. There was no sense in antagonizing him, the more especially so since she had not yet learnt all that she wanted to know.

"I think your scheme is horrible," she said after awhile, "the wheat destruction scheme, I mean, not Bridgers. But it is a very great one."

The man was susceptible to flattery, for he became genial again.

"It is the greatest scheme that has ever been known to science. It is the most colossal crime--I suppose they will call it a crime--that has ever been committed."

"But how are you going to get your code word away? The telegraphs are in the hands of the Government and I think you will find it difficult even if you have a secret wireless."

"Wireless, bah!" he said scornfully. "I never expected to send it by telegraph with or without wires. I have a much surer way, fraeulein, as you will see."

"But how will you escape?" she asked.

"I shall leave England to-morrow, soon after daybreak," he replied, with assurance, "by aeroplane, a long-distance flying-machine will land on my Sussex farm which will have British markings--indeed, it is already in England, and I and my good Bridgers will pass your coast without trouble."

He peered out of the window.

"This is Horsham, I think," he said, as they swept through what appeared to the girl to be a square. "That little building on the left is the railway station. You will see the signal lamps in a moment. My farm is about five miles down the Shoreham Road."

He was in an excellent temper as they passed through the old town and mounted the hill which leads to Shoreham, was politeness itself when the car had turned off the main road and had bumped over cart tracks to the door of a large building.

"This is your last escapade, Miss Cresswell, or Mrs. Beale I suppose I should call you," he said jovially, as he pushed her before him into a room where supper had been laid for two. "You see, you were not expected, but you shall have Bridgers'. It will be daylight in two hours," he said inconsequently, "you must have some wine."

She shook her head with a smile, and he laughed as if the implied suspicion of her refusal was the best joke in the world.

"Nein, nein, little friend," he said, "I shall not doctor you again. My days of doctoring have passed."

She had expected to find the farm in occupation, but apparently they were the only people there. The doctor had opened the door himself with a key, and no servant had appeared, nor apparently did he expect them to appear. She learnt afterwards that there were two farm servants, an old man and his wife, who lived in a cottage on the estate and came in the daytime to do the housework and prepare a cold supper against their master's coming.

Bridgers did not make his appearance. Apparently he was staying with his car. About three o'clock in the morning, when the first streaks of grey were showing in the sky, van Heerden rose to go in search of his assistant. Until then he had not ceased to talk of himself, of his scheme, of his great plan, of his early struggles, of his difficulties in persuading members of his Government to afford him the assistance he required. As he turned to the door she checked him with a word: