The two conspirators exchanged uneasy glances. The king seemed to have dropped off again into a heavy sleep, for his chest was rising steadily. Evidently the powerful drug had done its work. Maxgregor had opened the second phial, and had already begun to drop the spots at intervals on the sleeping man's lips.

"There must be something wrong," the queen said anxiously. "I am sure Miss Galloway is quite to be relied upon. She knew that she had to wait. They—why does she not come?"

"Watched, probably," Maxgregor said between his teeth. "There are many spies about. This delay may cause serious trouble, but you must not return back by yourself.... Try again."

Once more the signal was tried, and after the lapse of an anxious moment a knock came at the door. The queen crossed rapidly and opened it. Jessie stood there a little flushed and out of breath.

"I could not come before," she explained. "A man found me by the fountain. I can hardly tell you why, but I am quite sure that he is your enemy. If you knew Prince Boris Mazaroff——"

"You did wisely," the queen said. "I know Mazaroff quite well, and certainly he is no friend of mine or of my adopted country. You did not let him see you come?"

"No; I had to wait till there was a chance to get rid of him, madame. A friend came to my assistance, and Lord Merehaven was impressed into the service. Mazaroff will not trouble us for some little time; he will not be free before you regain the salon. And this gentleman——"

"Will have to stay here. He has to look after the king. Lock the door, Paul."

Maxgregor locked the door behind the queen and Jessie. They made their way quickly into the garden again without being seen. It was well that no time was lost, for the concert in the salon was just over, and the guests were beginning to troop out into the open air. The night was so calm and warm that it was possible to sit outside. Already a small army of footmen were coming with refreshments. The queen slipped away and joined a small party of the diplomatic circle, but the warm pressure of her hand and the radiancy of her smile testified to her appreciation of Jessie's services.

The girl was feeling uneasy and nervous now. She was wondering what was going to happen next. She slipped away from the rest and sauntered down a side path that led to a garden grove. Her head was in a maze of confusion. She had practically eaten nothing all day; she was feeling the want of food now. She sat down on a rustic seat and laid her aching head back.

Presently two men passed her, one old and grey and distinguished-looking, whom she had no difficulty in recognizing as Lord Merehaven. Nor was Jessie in the least surprised to see that his companion was Prince Mazaroff. The two men were talking earnestly together.

"I assure you, my lord, I am speaking no more than the truth," Mazaroff said eagerly. "The secret treaty between Russia and Asturia over those passes is ready for signature. It was handed to King Erno only to-day, and he promised to read it and return it signed in the morning."

"Provided that he is in a position to sign," Lord Merehaven said drily.

"Just so, my lord. Under that treaty Russia gets the Southern passes. Once that is a fact, the fate of Asturia is sealed. You can see that, of course?"

"Yes, I can see that, Prince. It is a question of absorbing Asturia. I would give a great deal for a few words now with the King of Asturia."

"I dare say," Mazaroff muttered. "So would I for that matter. But nobody knows where he is. He has a knack of mysteriously disappearing when on one of his orgies. The last time he was discovered in Paris in a drinking den, herding with some of the worst characters in Europe. At the present moment his suite are looking for him everywhere. You see, he has that treaty in his pocket——"

Lord Merehaven turned in his stride and muttered that he must see to something immediately. Mazaroff refrained from following, saying that he would smoke a cigarette in the seclusion of the garden. The light from a lantern fell on the face of the Russian, and Jessie could plainly see the evil triumph there.

"The seed has fallen on fruitful ground," Mazaroff laughed. "That pompous old ass will—— Igon! What is it?"

Another figure appeared out of the gloom and stood before Mazaroff. The new-comer might have been an actor from his shaven face and alert air. He was in evening dress, and wore a collar of some order.

"I followed you," the man addressed as Igon said. "What am I looking so annoyed about? Well, you will look quite as much annoyed, my friend, when you hear the news. We've lost the king."

Something like an oath rose to Mazaroff's lips. He glanced angrily at his companion.

"The thing is impossible," he said. "Why, I saw the king myself at four o'clock this afternoon in a state of hopeless intoxication. It was I who lured him from his hotel with the story of some wonderful dancing he was going to see, with a prospect of some gambling to follow. I spoke in glowing terms of the marvellous excellency of the champagne. I said he would have to be careful, as the police have their eyes on the place. Disguised as a waiter the king left his hotel and joined me. I saw him helplessly drunk, and I came away with instructions that the king was to be carefully watched, and that he was not to be allowed to leave. Don't stand there and tell me that my carefully planned coup of so many weeks has failed."

"I do tell you that, and the sooner you realize it the better," the other man said. "We put the king to bed and locked the door on the outside. Just before dusk the police raided the place——"

"By what right? It is a private house. Nothing has ever taken place there that the police object to. Of course, it was quite a fairy tale that I pitched to the King of Asturia."

"Well, there it is!" the other said gloomily. "The police raided the place. Possibly somebody put them up to it. That Maxgregor is a devil of a fellow who finds out everything. They found nothing, and went off professing to be satisfied. And when I unlocked the door to see that we hadn't gone too far with the king, he had vanished. I only found them out a little time ago, and I came to you at once. Not being an invited guest, I did not run the risk of coming to the house, but I got over the garden wall from the stables beyond, and here I am. It's no use blaming me, Mazaroff; I could not have helped it—nobody could have helped it."

Mazaroff paced up and down the gravel walk anxiously. His gloomy brows were knitted into a frown. A little while later and his face cleared again.

"I begin to see my way," he said. "We have people here to deal with cleverer than I anticipated. There is no time to be lost, Igon. Come this way."

The two rascals disappeared, leaving Jessie more mystified than ever. Then she rose to her feet in her turn and made her way towards the house. At any rate, she had made a discovery worth knowing. It seemed to be her duty to tell the queen what she had discovered. But the queen seemed to have vanished, for Jessie could not find her in the grounds of the house. As she came out of the hall she saw Ronald Hope, who appeared to be looking for somebody.

"I wanted you," he said in an undertone. "An explanation is due to me. You were going to tell me everything. I have never come across a more maddening mystery than this, Jessie."

"Don't even whisper my name," the girl said. "I will tell you everything presently. Meanwhile, I shall be very glad if you will tell me where I can find the Queen of Asturia."

"She has gone," was the unexpected reply. "She was talking to Lady Merehaven when a messenger came with a big letter. The queen glanced at it and ordered her carriage at once. She went quite suddenly. I hope there is nothing wrong, but from the expression of your face——"

"I hope my face is not as eloquent as all that," Jessie said. "What I have to say to the queen will keep, or the girl I am impersonating can carry the information. Let us go out into the garden, where we can talk freely. I am doing a bold thing, Ronald, and—— What is it?"

A footman was handing a letter for Jessie on a tray. The letter was addressed to Miss Galloway, and just for an instant Jessie hesitated. The letter might be quite private.

"Delivered by the young person from Bond Street, miss," the footman said. "The young person informed me that she hoped to come back with all that you required in an hour, miss. Meanwhile she seemed to be anxious for you to get this letter."

"What a complication it all is," Jessie said as she tore open the envelope and read the contents under the big electrics in the hall. "This is another mystery, Ronald. Read it."

Ronald Hope leaned over Jessie's shoulder and read as follows:—

"At all hazards go up to the bedroom where the king is, and warn the general he is watched. Implore him for Heaven's sake and his own to pull down the blind!"