With this intent the Baron ascended the stair and tried the door of the large apartment which communicated with the smaller room in which the Emperor slept. The door was bolted fast on the inside. He rapped at first lightly, then more loudly, but there was no response. Hesitating to break the Emperor's slumber for what he might regard as a trivial cause, von Brunfels returned to a lower floor and again reconnoitered, but now saw nothing of the guards on either side of the house. Perplexed, thinking that he had perhaps jumped too hastily to a conclusion; that after all the house might not be invested by the Archbishop's troops; that his own disquiet was the probable cause of his aroused suspicions; he determined not to awaken Rodolph until there was more pressing reason for doing so, but to remain himself on guard until daylight. He asked a servant to put out all lights except that in the dining-room, where he sat with a re-filled flagon at his elbow, ears alert for any unaccustomed sound. Toward midnight he again thought he saw soldiers move silently in the narrow street, as if guard were being changed, but although the moon shone with midsummer brightness, the depth of the shadows cast by the walls made it impossible for any definite judgment to be formed regarding what was taking place on the street below.

When day began to break grayly, the Baron watched the departing shadows, eager to learn whether or not their lifting would reveal anything of the guard he was convinced had been set on his house, but the clear light of morning showed the streets deserted and silent. Breathing more freely, he threw himself on a bench with his cloak around him and was soon in a deep sleep.

It was late when he awoke. Calling a servant, he asked why he had not been informed when his guest had breakfasted, and learned with renewed alarm that the Emperor had not yet made his appearance. Springing to his feet he strode hastily up the stair to find the door still bolted. With ever-increasing uneasiness he mounted another stair to the small room in which his sentinel sat, whose duty it was to watch for the light in the river house, and to unbar the window below and throw down the rope. This room communicated with the Emperor's apartments below by means of a secret circular stair. The guard seemed surprised to see the Baron, and what was said did not serve to reassure his Lordship.

"The light by the river has been burning all night. When morning broke I pulled up the rope and closed the window. Nobody came in."

"Why did you not inform me before daybreak?"

"I thought it was your Lordship who was out. You came in betimes these three nights past."

"Three nights?" cried the Baron. "Has the rope been in use for three nights?"

"Yes, my Lord. But, until last night, entry was made long before cock-crow."

The Baron, stopping to make no further inquiry, went down the circular stair, and after rapping at the bedroom door, opened it. The room was empty, and the bed had not been slept in. Cursing his own thoughtlessness in allowing the night to pass before finding this out, the Baron unbolted the door, went downstairs, and ordered his horse to be saddled. It was evident that for three nights the Emperor had been engaged in nocturnal rambles of some sort, and it was also plain that he had intended to return on the third night as usual, otherwise the light would not have burned till day-dawn in the window. What, then, had prevented his return? Into what trap had he fallen while the Baron was uselessly guarding an empty house? Had the suspected traitor at the river house informed the Palace authorities of the advent of a mysterious visitor, and had they learned who that visitor was? These reflections tortured Baron von Brunfels as he paced the stone-paved court impatiently waiting for his horse. He resolved to ride at once to the house by the river and extort full confession from Conrad at the point of his sword, slaying him with his own hand if there was the slightest suspicion of treachery.

He sprang into the saddle, when the horse was led out, and roused the echoes of the silent narrow street as he galloped toward the North Gate. He was permitted to pass through without question, and now proceeded more slowly toward the river, not desiring to show unusual haste. The light still burned in the upper window, and a few moments' investigation served to show that the house was untenanted and the boat gone. Thoroughly convinced now that Conrad was a traitor, he realised the futility of expecting to find him, as he would doubtless be well protected from vengeance by the Archbishop. The Baron bitterly regretted that he had not placed one of his own true and tried servants in charge of the river house. In his heart he had no fault to find with the young Emperor for engaging, unknown to his host, in these hazardous midnight expeditions. Rather he blamed himself for his reluctance in accompanying Rodolph on the first stroll that they took to the river, and thought this reluctance the probable cause of the Emperor's subsequent secrecy.

Having at last succeeded in forcing an entrance, Siegfried unbolted the stable door and placed the horse he had ridden beside the one standing there. In the large room he found an iron lamp dimly burning, and the trap-door raised. Everything tended to show that the Emperor fully expected to return, as he had returned before. Von Brunfels sat down on a bench and buried his face in his hands. He had not the slightest idea what to do, hampered as he was on every side. He could not go into the streets of Treves and cry that the Emperor was missing. He could not go to the Archbishop and seek assistance, as he might have done were the lost man any one else on earth than the Emperor Rodolph. He could not return to Frankfort and raise an army to come to the assistance of a man all supposed to be in the Holy Land. He might go to Frankfort and await developments, but Rodolph at that moment probably needed the aid of his good sword, a few hundred yards from where he sat. Every avenue seemed closed to him. Rodolph, in whatever prison he lay, was not more helpless than his friend outside.

As the Baron sat there, in a state bordering on despair, his ear caught the sound of a bugle, giving out an imperative note from the direction of the Archbishop's Palace. This was answered faintly from the town. The Archbishop was likely going to Treves. Siegfried sprang to his feet, and determined to present himself to Arnold von Isenberg, as he had need to do that day in any case, and by noting every look and expression of his Lordship, endeavour to form some conclusion regarding Rodolph's fate. Once more outside, he found that, during his brief withdrawal, many things had happened. A troop of horse was drawn up in front of the Palace. Mounted men were hurrying to and fro between Treves and Zurlauben. From the North Gate of the city another body of cavalry was issuing. Bugle notes came over the plains from Treves, and it was only too evident to the Baron that something unusual was afoot. As may be imagined, these hasty military preparations did not tend to soothe his apprehensions. His first thought that the Archbishop intended to proceed from Zurlauben to Treves seemed erroneous, because of the magnitude of the movement going forward. Arnold marched in state when he went abroad, but he did not throw the whole military force at his disposal into commotion by doing so. The Baron's practised eye, and his knowledge of life in Treves at once told him that some unexpected event had led to the sudden rally of troops round the summer palace. He walked his horse slowly towards the body of cavalry, and as he approached was saluted by the officer in charge, whom he recognised as the friend who had come to his rescue the evening before.

"You have chosen an inopportune time, my lord Baron, for your visit to the Archbishop, if such is your purpose," said the officer, in a low voice, when the Baron came up with him. "I doubt if you will have audience with his Lordship to-day."

"I came with that design," answered Siegfried, with a scarcely perceptible falter in his voice. "What has happened since I last saw you, for there appears to be some commotion of more than usual significance?"

"Ah, that I do not know," replied the officer. "There is something important in the wind that was not thought of last night. War, I hope. My instructions – there is nothing secret about them – is to take the road to Frankfort with all speed. I merely wait the coming of one who is now with his Lordship receiving final directions. Count Bertrich was in Treves this morning when, it seems, the Archbishop thought he should have been at hand. I spoke with the Count two hours ago, and I'll swear he had no idea that there was anything extraordinary afoot. A company has already gone westward with all haste, and five messengers have been despatched, one after another, to Treves for the Count. So impatient is the Archbishop that no sooner does one mounted man disappear through the North Gate than another is sent off. Here comes the Count now on the gallop at the head of his troop."

As he spoke the party which Siegfried had seen leaving the city came racing up in a cloud of dust. Count Bertrich flung himself from his horse and strode into the Palace, unheeding the salutations he received on all sides. At the same moment a man, booted and spurred, but not in armour, equipped rather for swift riding than for combat, came hurriedly down the steps, sprang on his horse and shouted "Forward."

The officer at once gave the word to his men, and the troop started off at a trot for the Frankfort Road.

Baron von Brunfels sat on his horse, doubtful what next to do. As he hesitated, Count Bertrich came out of the Palace, with pale face and set lips, mounted the horse he had left but a few moments before, gave a curt word of command, and galloped at the head of his company down the river road. Whatever communication he had had with the Archbishop must have been of the shortest, and the cloud on the Count's brow showed it had been at least unpleasant. The Baron determined to see the Archbishop at all hazards, hoping that some chance word would give him a key to these swift and mysterious movements. He dismounted, left his horse in charge of one of the numerous retainers standing about, went up the steps and entered the large hall, which he found filled with officers and nobles, all speaking low to each other; all, quite palpably, in a state of anxiety and unsatisfied curiosity. The Baron walked through this throng to a smaller ante-chamber into which he was admitted by the officer on guard, on mentioning his rank, and once there he sent his name to the Archbishop. After a time the Archbishop's monkish secretary came out, and bowing low said:

"My Lord, the Archbishop sends greeting to Baron Siegfried von Brunfels, and deeply regrets that it is impossible for his Lordship to receive even the Emperor to-day, were he to honour Treves with his presence."

"Even the Emperor!" repeated Siegfried, slowly, looking with keen apprehension at the secretary-monk, who had delivered so singular a message.

"Those were his Lordship's words," replied the monk, again bowing deferentially, which assurance did little to diminish the Baron's anxiety.

"I trust," said Siegfried, "that nothing untoward has happened to cause his Lordship apprehension."

"I devoutly trust not," answered the monk, with non-committal obsequiousness, and after this remark he gravely took his leave.

Baron von Brunfels again passed through the crowded hall, pausing to converse briefly with one or two acquaintances, but he learned nothing; on the contrary, he found those who knew him, expecting enlightenment themselves because he had just come from the ante-chamber.

The Baron mounted his horse and rode slowly back to Treves, pondering on the exciting events of the day. These events had convinced him that if Rodolph had been captured in the night, he had evidently escaped in the morning, and that this was the meaning of the hurried scouring of the country. There seemed nothing left but to return to his house in Treves, for he thought that if Rodolph could remain in hiding until nightfall he would probably attempt to re-enter the house by the way he had departed from it, knowing as he must, the anxiety his continued absence would cause his friend. Besides it must undoubtedly occur to him that, while the search lasted, the safest place in which to hide was Treves itself, for the Archbishop would most likely imagine that the fugitive Emperor had made for Frankfort with all the speed he could command.

Reasoning thus, the Baron passed again unchallenged through the gate to his house, which he found just as he had left it. He sent one of his servants to the cottage by the river with strict instructions not to quit the place until he was relieved, and to show two lights in the window if, for any reason, help was needed.

Then the Baron threw himself down on a couch to get some rest, and await the coming of night.