"I've just heard of the accident," she cried, fearfully. "Isn't it terrible. What had we better do?"

For a few moments no one said a word. Then Kennedy began carefully examining the bolometer and some other recording instruments he had, while the rest of us watched, fascinated.

Somehow that "busybody" seemed to attract me. I could not resist looking into it from time to time as Kennedy worked.

I was scarcely able to control my excitement when, again, I saw the same scene enacted on the sidewalk before the laboratory. Hurriedly I looked at my watch. It was ten o'clock!

"Craig!" I cried. "Another!"

Instantly he was at my side, gazing eagerly. There was a second innocent pedestrian lying on the sidewalk while a crowd, almost panic-stricken, gathered about him.

We watched, almost stunned by the suddenness of the thing, until finally, without a word, Kennedy turned away, his face set in tense lines.

"It's no use," he muttered, as we gathered about him. "We're beaten. I can't stand this sort of thing. I will leave to-morrow for South America."

I thought Elaine Dodge would faint at the shock of his words coming so soon after the terrible occurrence outside. She looked at him, speechless.

It happened that Kennedy had some artificial flowers on a stand, which he had been using long before in the study of synthetic coloring materials. Before Elaine could recover her tongue, he seized them and stuck them into a tall beaker, like a vase. Then he deliberately walked to the window and placed the beaker on the ledge in a most prominent position.

Elaine and Bennett, to say nothing of myself, gazed at him, awe-struck.

"Is--is there no other way but to surrender?" she asked.

Kennedy mournfully shook his head.

"I'm afraid not," he answered slowly. "There's no telling how far a fellow who has this marvellous power might go. I think I'd better leave to save you. He may not content himself with innocent outsiders always."

Nothing that any of us could say, not even the pleadings of Elaine herself could move him. The thought that at eleven o'clock a third innocent pa.s.serby might lie stricken on the street seemed to move him powerfully.

When, at eleven, nothing happened as it had at the other two hours, he was even more confirmed in his purpose. Entreaties had no effect, and late in the morning, he succeeded in convincing us all that his purpose was irrevocable.

As we stood at the door, mournfully bidding our visitors farewell until the morrow, when he had decided to sail, I could see that he was eager to be alone. He had been looking now and then at the peculiar instrument which he had been studying earlier in the day and I could see on his face a sort of subtle intentness.

"I'm so sorry--Craig," murmured Elaine, choking back her emotion, and finding it impossible to go on.

"So am I, Elaine," he answered, tensely. "But--perhaps--when this trouble blows over--"

He paused, unable to speak, turned, and shook his head. Then with a forced gaiety he bade Elaine and Perry Bennett adieu, saying that perhaps a trip might do him good.

They had scarcely gone out and Kennedy closed the door carefully, when he turned and went directly to the instrument which I had seen him observing so interestedly.

Plainly, I could see that it was registering something.

"What's the matter?" I asked, non-plussed.

"Just a moment, Walter," he replied evasively, as if not quite sure of himself.

He walked fairly close to the window this time, keeping well out of the direct line of it, however, and there stood gazing out into the street.

A glint, as if of the sun shining on a pair of opera gla.s.ses could be seen from a window across the way.

"We are being watched," he said slowly, turning and looking at me fixedly, "but I don't dare investigate lest it cost the lives of more unfortunates."

He stood for a moment in deep thought. Then he pulled out a suitcase and began silently to pack it.

Although we had not dared to investigate, we knew that from a building, across the street, emissaries of the Clutching Hand were watching for our signal of surrender.

The fact was, as we found out later, that in a poorly furnished room, much after the fashion of that which, with the help of the authorities, we had once raided in the suburbs, there were at that moment two crooks.

One of them was the famous, or rather the infamous, Professor LeCroix, with whom in a disguise as a doctor we had already had some experience when he stole from the Hillside Sanitarium the twilight sleep drugs.

The other was the young secretary of the Clutching Hand who had given the warning at the suburban headquarters at the time when they were endeavoring to transfuse Elaine Dodge's blood to save the life of the crook whom she had shot.

This was the new headquarters of the master criminal, very carefully guarded.

"Look!" cried LeCroix, very much elated at the effect that had been produced by his infra-red rays, "There is the sign--the vase of flowers. We have got him this time!"

LeCroix gleefully patted a peculiar instrument beside him. Apparently it was a combination of powerful electric arcs, the rays of which were shot through a funnel-like arrangement into a converter or, rather, a sort of concentration apparatus from which the dread power could be released through a tube-like affair at one end. It was his infra-red heat wave, F-ray, engine.

"I told you--it would work!" cried LeCroix.

I did not argue any further with Craig about his sudden resolution to go away. But it is a very solemn proceeding to pack up and admit defeat after such a brilliant succession of cases as had been his until we met this master criminal.

He was unshakeable, however, and the next morning we closed the laboratory and loaded our baggage, which was considerable, on a taxicab.

Neither of us said much, but I saw a quick look of appreciation on Craig's face as we pulled up at the wharf and saw that the Dodge car was already there. He seemed deeply moved that Elaine should come at such an early hour to have a last word.

Our cab stopped and Kennedy moved over toward her car, directing two porters, whom I noticed that he chose with care, to wait at one side.

One of them was an old Irishman with a slight limp; the other a wiry Frenchman with a pointed beard.

In spite of her pleadings, however, Kennedy held to his purpose and, as we shook hands for the last time, I thought that Elaine would almost break down.

"Here, you fellows, now," directed Craig, turning brusquely to the porters, "hustle that baggage right aboard."

"Can't we go on the ship, too?" asked Elaine, appealingly.

"I'm sorry--I'm afraid there isn't time," apologized Craig.

We finally tore ourselves away, followed by the porters carrying as much as they could.

"Bon voyage!" cried Elaine, bravely keeping back a choke in her voice.

Near the gangplank, in the crowd, I noticed a couple of sinister faces watching the ship's officers and the pa.s.sengers going aboard. Kennedy's quick eye spotted them, too, but he did not show in any way that he noticed anything as, followed by our two porters, we quickly climbed the gangplank.

A moment Craig paused by the rail and waved to Elaine and Bennett who returned the salute feelingly. I paused at the rail, too, speculating how we were to get the rest of our baggage aboard in time, for we had taken several minutes saying good-bye.