"We do not consider pa.s.sports of much value," said the officer; "but a Red Cross appointment--"

"Oh, he has that, too; all our men carry them."

"In that case, with my friend Rondel to guide him, I believe Henderson could accomplish your errand."

"Let us send for him at once!" exclaimed Uncle John.

Carg scribbled on a card.

"He wouldn't leave the launch without orders, unless forced by the Germans," a.s.serted the captain, and handed the card to von Holtz.

The young lieutenant took his cap, bowed profoundly and left the room.

In ten minutes he returned, saying: "I am not so fortunate as I had thought. All our troops are on the move, headed for the Yser. There will be fighting, presently, and--I must remain here," he added despondently.

"It won't be your last chance, I'm sure," said Patsy. "Will that dreadful Colonel Grau go, too?"

"No; he is to remain. But all regiments quartered here are now marching out and to-morrow a fresh brigade will enter Ostend."

They were silent a time, until someone rapped upon the door. Von Holtz admitted a slim, good-looking young Belgian who grasped his hand and said eagerly in French:

"You sent for me?"

"Yes. You may speak English here, Monsieur Rondel." Then he presented his friend to the Americans, who approved him on sight.

Henderson came a few minutes later and listened respectfully to the plan Miss Doyle unfolded. He was to go with Monsieur Rondel to Charleroi, find Mrs. Denton, explain that her husband was very ill, and bring her back with him to Ostend. He would report promptly on his return and they would tell him what to do next.

The man accepted the mission without a word of protest. Charleroi was in central Belgium, but that did not mean many miles away and Rondel a.s.sured him they would meet with no difficulties. The trains were reserved for soldiers, but the Belgian had an automobile and a German permit to drive it. The roads were excellent.

"Now, remember," said Patsy, "the lady you are going for is Mrs. Albert Denton. She lives with her mother, or did, the last we heard of her."

"And her mother's name and address?" inquired Henderson.

"We are ignorant of either," she confessed; "but it's not a very big town and I'm sure you'll easily find her."

"I know the place well," said Rondel, "and I have friends residing there who will give me information."

Uncle John supplied them liberally with money, impressed upon them the necessity of haste, and sent them away. Rondel declared the night time was best for the trip and promised to be on the way within the hour, and in Charleroi by next morning.

Notwithstanding the fact that they had succeeded in promoting by proxy the mission which had brought them to Belgium, the Americans found the next day an exceedingly irksome one. In the company of Lieutenant von Holtz they were permitted to walk about the city, but they found little pleasure in that, owing to the bustle of outgoing troops and the arrival of others to replace them. Nor did they care to stray far from their quarters, for fear the council would meet and they might be sent for.

However, no sign from Colonel Grau was received that day. Patsy went to bed with a nervous headache and left Uncle John and the captain to smoke more than was good for them. Both the men had now come to regard their situation as serious and as the American consul was at this time absent in Brussels they could think of no way to secure their freedom. No one knew when the consul would return; Mr. Merrick had been refused the privilege of using the telegraph or mails. During one of their strolls they had met the correspondent of an American newspaper, but when the man learned they were suspects he got away from them as soon as possible. He did not know Mr. Merrick and his own liberty was too precarious for him to argue with Colonel Grau.

"I'm beginning to think," said Uncle John, "that we're up against a hard proposition. Letters and endors.e.m.e.nts from prominent Americans seem to have no weight with these Germans. I'd no idea our ident.i.ty could ever be disputed."

"We must admit, sir," returned the captain, reflectively, "that the spy system in this war is something remarkable. Spies are everywhere; clever ones, too, who adopt every sort of subterfuge to escape detection. I do not blame Grau so much for caution as for lack of judgment."

"He's a blockhead!" cried Mr. Merrick testily.

"He is. I'm astonished they should place so much power in the hands of one so slow witted."

"He has insulted us," continued Uncle John. "He has dared to arrest three free-born Americans."

"Who came into a troubled country, occupied by a conquering army, without being invited."

"Well--that's true," sighed the little millionaire, "but what are we going to do about it?"

"Wait," counseled the captain.

The next day dawned dark and rainy and the weather had a depressing effect upon the prisoners. It was too damp to stir out of doors and the confinement of the hotel rooms became especially irksome. Not only were they anxious about their own fate but it was far past the time when they should have heard from Henderson and Rondel. Patsy's nerves were getting beyond her control; Uncle John stumped around with his hands thrust deep in his pockets and a frown wrinkling his forehead; the captain smoked innumerable pipes of tobacco and said not a word. Von Holtz, noting the uneasiness of his charges, discreetly forbore conversation and retired to a far corner where he hid behind a book.

It was nearing evening when a commotion was heard on the stairs, followed by the heavy tramp of feet in the corridor. A sharp rap sounded on the door of their sitting room. Uncle John stepped forward to open it, when in stalked a group of German officers, their swords and spurs clanking and their cloaks glistening with rain-drops. At sight of the young girl off came cap and helmet and with one accord they bowed low.

The leader was a tall, thin man with a leathern face, hooked nose and piercing gray eyes. His breast glittered with orders. It was von Kargenbrut, the military governor.

"Pardon our intrusion," he said in English, his harsh voice having a guttural accent. "Which gentleman is Mr. John Merrick?"

"I am John Merrick."

The eagle eyes swept over him with a swift glance.

"We owe you our apology," continued the governor, speaking as fiercely as if he were ordering Uncle John beheaded. "I have been too busy to take up your case before to-day, when I discover that we have treated you discourteously. You will consider our fault due to these troubled times, when mistakes occur in spite of our watchfulness. Is it not so?"

"Your error has caused us great inconvenience," responded Mr. Merrick stiffly.

The governor whirled around. "Colonel Grau!" he called, and from the rear of the group the colonel stepped forward. His face still wore the expression of comical surprise. "Return to Mr. Merrick his papers and credentials."

The colonel drew the packet of papers from his breast pocket and handed it to Uncle John. Then he glanced hesitatingly at his superior, who glared at him.

"He cannot speak the English," said the governor to Mr. Merrick, "but he owes you reparation."

"Grau's stupidity has been very annoying, to say the least," was the ungracious reply. "We came here on important business, and presented our papers--all in proper order--on demand. We had the right to expect decent treatment, as respectable American citizens engaged in humanitarian work; yet this--this--man," pointing an accusing finger at the colonel, "ordered us detained--arrested!--and kept our papers."

The governor listened coldly and at the end of the speech inclined his head.

"Colonel Grau," said he, "has been relieved of his duties here and transferred to another station. To you I have personally apologized. You will find my endors.e.m.e.nt on your papers and, in addition, an order that will grant you safe conduct wherever you may wish to go. If that is not enough, make your demands and I will consider them."

"Why, that is all I can expect, your Excellency, under the circ.u.mstances," replied Mr. Merrick. "I suppose I ought to thank you for your present act of justice."

"No; it is your due. Good evening, Mr. Merrick."

He swung around on his heel and every officer of the group turned with him, like so many automatons, all facing the door. But Mr. Merrick touched the governor upon the arm.

"One moment, your Excellency. This young officer, Lieutenant von Holtz, has treated us kindly and courteously. I want you to know that one of your men, at least, has performed his duty in a way to merit our thanks--and yours."

The governor scowled at Lieutenant von Holtz, who stood like a statue, with lowered eyes.

"Lieutenant, you are commissioned to guide Mr. Merrick as long as he remains within our lines. You will guard his safety and that of his party. When he departs, come to me personally with your report."

The young officer bowed; the governor tramped to the door and went out, followed by his staff. Grau left the room last, with hang-dog look, and Patsy slammed the door in the hope of b.u.mping his wooden head.