"It is true, Major Marchand," she murmured, struggling for self-control. "I am eaten up by curiosity."

"Is it only curiosity that troubles you, Mademoiselle?" he said dryly.

"No! No! I am seriously alarmed. I am anxious--for a friend." Her voice was tense.

"You received a certain message?" he asked.

"Oh, yes, Major Marchand! And that excites me," she replied, more calmly now. "Was it really you who dropped the paper bomb at my feet?"

His eyes danced for a moment. "That was entirely--what you call--by chance. Mademoiselle, I spied you, and having the written message of your friend I inserted it in the bomb, twisted the neck of it, and let it fall at your feet. You are, of course, acquainted with Lieutenant Cameron?"

"He is the twin brother of my dearest friend," Ruth replied. "Helen is in Paris--helping make soup for French orphans," and she smiled.

"Something that I have heard has worried me vastly about Tom." Her smile disappeared and her gaze at the French major was pleading.

His own countenance again fell into serious lines, and he tapped the table thoughtfully. Ruth clasped her hands as she waited. She felt that something untoward was about to be made known to her. There was something about Tom which would shock her.

"I am sorry, Mademoiselle," murmured the major. "Here is something said about Lieutenant Cameron."

"In that message Bubu brought?" she asked slowly.

"Yes. It is from my brother. Did you know that Lieutenant Cameron was working with the Count Marchand in Germany?"

"Oh, I did not know it until--until lately! There are such stories afloat!"

"Ah!" He smiled and nodded understandingly. "Do not let those idle tales annoy you. Lieutenant Cameron is a very able and a very honorable young man. He volunteered for the dangerous service. Of course, his comrades could not be told the truth. And it chanced he was observed speaking to one of our agents who came from the German side.

"At once it was decided that he would do well in the area of Merz, where Count Marchand is in command. You understand? Lieutenant Cameron's comrades were given the wrong impression. Otherwise, knowledge that he was a scout might have been easily discovered by German spies in this sector. Your friend speaks perfect German."

"Oh, yes," Ruth said. "He began to prattle to Babette, his German-Swiss nurse when he was a child."

"So he has been of much help to us near Merz. But my brother informs me now that a serious difficulty has arisen."

"What is it, Major Marchand?" asked the girl, with tightening lips.

"Lieutenant Cameron has been arrested. He is suspected by the Germans at Merz. He was furnished the papers and uniform of a Bavarian captain. The authorities are making an investigation. It may--I am desolated to say it, Mademoiselle!--become fatal for Lieutenant Cameron."

CHAPTER XVIII

BEARING THE BURDEN

It was dusk before Ruth Fielding arrived at the Clair Hospital after her exciting call at the Chateau Marchand. She had refused to allow Major Marchand to accompany her to the village, for she learned he must be off for the front lines later in the evening, and would in any case have but a few hours with his mother.

Ruth had conceived a plan.

She had been in serious conference with Major Marchand and the countess. Neither, of course, knew the particulars of Tom Cameron's arrest at Merz, beyond the German lines. However, they sympathized with her and applauded her desire to help Tom.

For there was a chance for Ruth to aid the young American lieutenant.

The major admitted it, and the countess admired Ruth's courage in suggesting it.

The brief announcement of Tom's arrest sent by Count Marchand by Bubu, the greyhound, together with facts that the major knew, aided Ruth in gaining a pretty clear understanding of Tom Cameron's situation.

He had volunteered for this dangerous service and had been a.s.signed to work with the French secret agents on both sides of the battle line.

After his own comrades' suspicion was fixed on him, it was decided, Tom agreeing, that he would be able to do better work in Germany. Major Marchand had himself guided the American lieutenant to Merz, and introduced him to Count Allaire Marchand.

"And we both consider him, Mademoiselle," said the major generously, "a most promising recruit. We arranged for him to enter Merz in the guise of a wealthy Bavarian Hauptman on leave. Merz, you must understand, was quite a famous health resort before the war. Many foreigners, as well as Germans, went there to drink the waters. That is why we had a summer estate on the outskirts of Merz."

In addition, the major told of Tom's early successes in getting acquainted with the chief men of the town--particularly with the gouty old Prussian general, who was the military governor of the district.

Information which Tom had gained, the major whispered, had spurred the American authorities in this sector to remove the civilian population for several miles back of the trenches.

There was soon to be a "surprise" attack upon the Americans, and the huge guns being brought up for the bombardment before the infantry advance might utterly wreck the open country immediately back of the American trenches.

Tom Cameron, posing as Captain Von Brenner, was apparently awaiting at Merz's best hotel the appearance of his sister, who, he declared, would join him before the conclusion of his furlough. At first the old general and the other authorities had accepted the American at his face value.

Somehow, suspicion must have been aroused within the last twenty-four hours. The message that had come by Bubu stated that Tom was under arrest as a suspicious person, but that he was detained only in the general's quarters.

It was something that might blow over. Finesse was required. Ruth had suggested a plan, which, although applauded by the major and his mother, they could not advise her to carry out. For, if it failed, her own peril would be as great as Tom Cameron's. In fact, the result of failure would be that both of them would be shot!

But the American girl was inspired for the task. So, urged by the countess, her son had agreed to a.s.sist Ruth in an attempt which he could but approve. Had Count Allaire Marchand, or any of his French operatives in and near Merz, attempted to a.s.sist in Tom Cameron's escape out of Germany, they would merely lay themselves open to suspicion, and possibly to arrest.

Ruth saw a code message written to the count, who was hiding on what had been the Marchand estate before the war, and then saw Bubu called into the library and the twist of oiled paper secreted in the dog's mouth. When the greyhound was released for his return journey to Merz, Ruth, likewise, left the chateau. A short time later, as has been said, she arrived safely at the hospital in the village.

Just as she was about to enter the gateway, a heavy touring car rumbled up the road from the south. It stopped before the hospital gate.

There was a uniformed officer on the seat beside the chauffeur; but the only occupants of the tonneau were two women.

"We wish to see Miss Fielding," said one of these women, rising and speaking hastily to the sentinel who had presented arms before the gateway.

"I shall have to call somebody from inside, Mademoiselle," said the old territorial who was on guard duty. "There is such a name here, I believe."

"Never mind calling anybody!" Ruth suddenly exclaimed, springing forward. "Miss Fielding is here to answer the call. Will you girls tell me what under the sun you have come here for? I thought you would know enough to remain safely in Paris!"

"Ruthie!" shrieked Helen Cameron, fairly throwing herself from the automobile into Ruth's arms. "It is she! It is her! It is her owniest, owniest self!"

"Hold on," said the second occupant of the automobile tonneau, alighting more heavily. "Leave a bit for me to fall on, Nell."

"Don't you dare, Heavy Stone!" cried Ruth. "If you fell upon my frailness----"

"Hush! Tell it not in Gath," cried Jennie sepulchrally. "I have lost flesh--positively."

"Yes," agreed Helen, quite dramatically. "She barked her knuckle.

Every little bit counts with Heavy, you know."

Ruth welcomed the plump girl quite as warmly as she did her own particular chum. Immediately the military automobile rolled away. The visitors both carried handbags.

"How did you come to get here--and where under the sun will you stay?"

Ruth demanded again.