"Yes," she replied eagerly.

Neither Elaine nor I knew him at the time, though I think she thought he might be the bearer of some message from Craig. As a matter of fact he was the emissary to whom the stenographer had thrown the torpedo model from the Navy Building in Washington.

His visit was only a part of a deep-laid scheme. Only a few minutes before, three crooks--among them our visitor--had stopped just below the house on a side street. To him the others had given final instructions and a note, and he had gone on, leaving the two standing there.

"I have a note for you," he said, bowing and handing an envelope to Elaine, which she tore open and read.

WASHINGTON, D. C.

MISS ELAINE DODGE, Fifth Avenue, New York.

MY DEAR MISS DODGE,

The bearer, Mr. Bailey, of the Secret Service, would like to question you regarding the disappearance of Mr. Kennedy and the model of his torpedo.

MORGAN BERTRAND, U. S. Secret Service.

Even as we were talking the other two crooks had already moved up and had made their way around back of the stone wall that cut off the Dodge garden back of the house. There they stood, whispering eagerly and gazing furtively over the wall as their man talked to Elaine.

After a moment I stepped aside, while Elaine read the note, and as he asked her a few questions, I could not help feeling that the affair had a very suspicious look. The more I thought of it, the less I liked it.

Finally I could stand it no longer.

"I beg your pardon," I excused myself to the alleged Mr. Bailey, "but may I speak to Miss Dodge alone just a minute?"

He bowed, rather ungraciously I thought, and Elaine followed me aside while I told her my fears.

"I don't like the looks of it myself," she agreed. "Yes, I'll be very careful what I say."

While we were talking I could see out of the corner of my eye that the fellow was looking at us askance and frowning. But if I had had an X-ray eye, I might have seen his two companions on the other side of the wall, peering over as they had been before and showing every evidence of annoyance at my interference.

The man resumed his questioning of Elaine regarding the torpedo and she replied guardedly, as in fact she could not do otherwise.

Suddenly we heard shouts on the other side of the wall, as though some one were attacking some one else.

There seemed to be several of them, for a man quickly flung himself over the wall and ran to us.

"They're after us," he shouted to Bailey.

Instantly our visitor drew a gun and followed the newcomer as he ran to get out of the garden in the opposite direction.

Just then a tall, well-dressed, striking man came over the wall, accompanied by another dressed as a policeman, and rushed toward us.

The car bearing the mysterious stranger, Del Mar, kept on until it reached New York, then made its way through the city until it came to the Hotel La Coste.

Del Mar jumped out of the car, his wet clothes covered completely by the long coat. He registered and rode up in the elevator to rooms which had already been engaged for him. In his suite a valet was already unpacking some trunks and laying out clothes when Del Mar and his a.s.sistant entered.

With an exclamation of satisfaction at his unostentatious entry into the city, Del Mar threw off his heavy coat. The valet hastened to a.s.sist him in removing the clothes still wet and wrinkled from his plunge into the sea.

Scarcely had Del Mar changed his clothes than he received two visitors.

Strangely enough they were men dressed in the uniform of policemen.

"First of all we must convince them of our honesty," he said looking fixedly at the two men. "Orders have been given to the men employed by Wu Fang to be about in half an hour. We must pretend to arrest them on sight. You understand?"

"Yes, sir," they nodded.

"Very well, come on," Del Mar ordered taking up his hat and preceding them from the room.

Outside the La Coste, Del Mar and his two policemen entered the car which had driven Del Mar from the sea coast and were quickly whisked away, up-town, until they came near the Dodge house.

Del Mar leaped from the car followed by his two policemen. "There they are, already," he whispered, pointing up the avenue.

All three hastened up the avenue now where, beside a wall, they could see two men looking through intently as though very angry at something going on inside.

"Arrest them!" shouted Del Mar as his own men ran forward.

The fight was short and sharp, with every evidence of being genuine.

One of the men managed to break away and jump the garden wall, with Del Mar and one of the policemen after him, while the other only reached the wall to be dragged down by the other policeman.

Elaine and I had been, as I have said, talking with the man named Bailey who posed as a Secret Service man, when the rumpus began. As the man came over the fence, warning Bailey, it was evident that neither of them had time to escape. With his club the policeman struck the newcomer of the two flat while the tall, athletic gentleman leaped upon Bailey and before we knew it had him disarmed. In a most clean-cut and professional way he snapped the bracelets on the man.

Elaine was astounded at the kaleidoscopic turn of affairs, too astounded even to make an outcry. As for me, it was all so sudden that I had no chance to take part in it. Besides I should not have known quite on which side to fight. So I did nothing.

But as it was over so quickly, I took a step forward to our latest arrival.

"Beg pardon, old man," I began, "but don't you think this is just a little raw? What's it all about?"

The newest comer eyed me for a moment, then with quiet dignity drew from his pocket and handed me his card which read simply:

M. Del Mar, Private Investigator.

As I looked up, I saw Del Mar's other policeman bringing in another manacled man.

"These are crooks--foreign agents," replied Del Mar pointing to the prisoners. "The government has employed me to run them down."

"What of this?" asked Elaine holding up the note from Bertrand.

"A fake, a forgery," reiterated Del Mar, looking at it a moment critically. Then to the men uniformed as police he ordered, "You can take them to jail. They're the fellows, all right."

As the prisoners were led off, Del Mar turned to Elaine. "Would you mind answering a few questions about these men?"

"Why--no," she hesitated. "But I think we'd better go into the house, after such a thing as this. It makes me feel nervous."

With Del Mar I followed Elaine in through the conservatory.

Del Mar had scarcely registered at the La Coste when the smaller car which had been waiting at the fisherman's hut drew up before the hotel entrance. From it alighted the fussy old gentleman who bore such a remarkable resemblance to the fisherman, hastily paid his driver and entered the hotel.