"It is too early to attempt any theorizing, Carnes. Let us confine ourselves to the known facts. Lieutenant Breslau was normal at midnight and was working in this room. Some time between then and seven this morning he underwent certain mental and physical changes which prevent him from telling us what he observed. During the same period, a hole was cut in the roof and things of great importance stolen. At the same time, all the gla.s.s in the laboratory became semi-opaque. The problem is to determine what connection there is between the three events. I will handle the scientific end here, but there is some outside work to be done, and that will be your share."

"Give your orders, Doctor," said the detective briefly.

"To understand what I am driving at, I will have to tell you what has been stolen. Naturally this is highly confidential. Some rumors have leaked out as to my experiments with 'radite,' as I have named the new radium-containing disintegrating explosive on which I have been working, but no one short of the Secretary of War and the Chief of Ordnance and certain of their selected subordinates knows that my experiments have been successful and that the United States is in a position to manufacture radite in almost unlimited quant.i.ties from the pitchblende ore deposits of Wyoming and Nevada. The effects of radite will be catastrophic on the unfortunate victim on whom it is first used. The only thing left to do was to develop a gun from which radite sh.e.l.ls could be fired with safety and precision.

"Ordinary propellant powders are too variable for this purpose, but I found that radite B, one form of my new explosive, can be used for propelling the sh.e.l.ls from a gun. The ordinary gun will last only two or three rounds, due to the erosive action of the radite charge on the barrel, and ordinary ordnance is heavier and more c.u.mbersome than is necessary. When this was found to be the case, the Chief of Ordnance detailed Lieutenant Breslau, the army's greatest expert on gun design, to work with me in an attempt to develop a suitable weapon. Breslau is a wizard at that sort of work and he has made a miniature working model of a gun with a vitrilene-lined barrel which is capable of being fired with a miniature sh.e.l.l. The gun will stand up under the repeated firing of radite charges and is very light and compact and gives an accuracy of fire control heretofore deemed impossible. From this he planned to construct a larger weapon which would fire a sh.e.l.l containing an explosive charge of two and one-half ounces of radite at a rate of fire of two hundred shots per minute. The destructive effect of each sh.e.l.l will be greater than that of the ordinary high-explosive sh.e.l.l fired from a sixteen-inch mortar, and all of the sh.e.l.ls can be landed inside a two-hundred foot circle at a range of fifteen miles.

The weight of the completed gun will be less than half a ton, exclusive of the firing platform. It is Breslau's working model which has been stolen."

Carnes whistled softly between his teeth.

"The matter will have to be handled pretty delicately to avoid international complications," he said. "It's hard to tell just where to look. There are a great many nations who would give any amount for a model of such a weapon."

"The matter must be handled delicately and also in absolute secrecy, Carnes. We are not yet ready to announce to the world the fact that we have such a weapon in our armory. It is the plan of the President to have a half dozen of these weapons manufactured and give a demonstration of their terrible effectiveness to representatives of the powers of the world. Think what an argument the existence of such a weapon will be for the furtherance of his plans for disarmament and universal peace! Public sentiment will force disarmament on the world, for even the worst jingoist could no longer defend armaments in the face of America's offer to sc.r.a.p these super-engines of destruction and to destroy the plans from which they were made. If the model has fallen into the hands of any civilized power the damage is not irreparable, for public opinion would force its surrender and return.

It is among the uncivilized powers that our search must first be made."

"That makes the problem of where to start more complicated."

"On the contrary, it simplifies it immensely. At the head of the uncivilized powers stands one which has the brains, the scientific knowledge and the manufacturing facilities to make terrible use of such a weapon. In addition, the aim of that power is to overthrow all world governments and set up in their stead its own tyrannical disorder. Need I name it?"

"You refer to Russia."

"Not to Russia, the great slumbering giant who will some day take her place in the sun in fellowship with the other nations, but to Bolsheviki, that empire within an empire, that horrible power which it holding sleeping Russia in chains of steel and blood. It is there that our search must first be made."

"Of course, they have no official representative in America."

"No, but the Young Labor Party is as much their accredited representative as the British Amba.s.sador is of imperial Britain. Your first task will be to trail down and locate every leader of that group and to investigate his present activities."

"I can tell you where most of them are without investigation. Denberg, s.e.m.e.nsky and Karuska are in Atlanta; Fedorovitch and Caspar are in Leavenworth; Saranoff is dead--"

"Presumably."

"Why, Doctor, I saw with my own eyes the destruction of the submarine in which he was riding!"

"Did you see his dead body?"

"No."

"Neither did I, and I will never be sure until I do. Once before we were certain of his death, and he bobbed up with a new fiendish device. We cannot eliminate Saranoff."

"I will include him in my plans."

"Do so. Besides a hypothetical Saranoff, there are a half dozen or more of the old leaders of the gang who are alive and at liberty, so far as we know. They fled the country after the Coast Guard broke up their alien smuggling scheme, but some of them may have returned.

There are also thirty or forty underlings who should be located and checked up on, and, in addition, we must not lose sight of the fact that new heads of the organization may have been smuggled into the United States. It is no simple task that I am setting you, Carnes, but I know that you and Bolton will see it through if anyone can."

"Thanks, Doctor, we'll do our best. If I am not speaking out of turn, what are you planning to do in the mean time?"

"I am going to start Taylor off on an ultra-short wave generator and try a few experiments along that line. Breslau is at Walter Reed and they are doing all they can for him, but until I can get some definite information as to the underlying cause of his condition, they are more or less shooting in the dark."

"How are they treating him?"

"By electric stimulations and vibratory treatments and by keeping him in a darkened room. By the way, Carnes, if I am correct in my line of thought, it would be well to have an extra guard put over Karuska. He was the only real expert in ordnance that the Young Labor party had, and if they have Breslau's model they'll need him to supervise the construction of a gun."

"I'll attend to that at once, Doctor. Is there anything else?"

"Not that I know of. I am going out to Takoma Park this afternoon and have another look at Breslau, but it is too soon to hope for any change in his condition. Aside from the time I will be out there, you can find me either here or at my home, in case anything develops."

"I'll get on the job at once, Doctor."

"Thanks, old dear. Remember that speed must be the keynote of your work."

The telephone bell at the head of Dr. Bird's bed woke into noisy activity. The doctor roused himself and took down the instrument sleepily. A glance at the clock showed him that it was four in the morning and he muttered a malediction on the one who had called him.

"h.e.l.lo," he said into the receiver. "Dr. Bird speaking."

"Doctor," came a crisp voice over the wire, "wake up! This is Carnes talking. Something has broken loose!"

All trace of sleep vanished from Dr. Bird's face and his eyes glowed momentarily with a peculiar glitter which Carnes would at once have recognized as indicative of the keenest interest.

"What has happened, Carnes?" he demanded.

"I telephoned Atlanta this morning and arranged to have an extra guard put over Karuska as you suggested. The matter was simplified by the fact that he and nine others were confined in the prison infirmary.

The warden agreed to do as I told him, and, in addition to the regular guards, a special man was placed in the ward near Karuska's bed. At 2 A. M. the lights in the ward went out."

"Accidentally, or were they put out?"

"They haven't found out yet. At any rate they are all right now, but Karuska and all of the other inmates and all the guards of that particular ward have gone crazy."

"The d.i.c.kens you say!"

"Not only that, they are also partially paralyzed. The description I got over the telephone corresponds exactly with the condition of Lieutenant Breslau as you described it to me. Here is the most interesting part of the whole affair. The special guard over Karuska was only lightly affected and has already recovered and is in a position to tell you exactly what happened. I got a garbled account of the affair from the warden, something about a goldfish bowl or something like that, the warden wouldn't take it seriously enough to give me details. I didn't press for them much for I knew that you would rather get them at first hand."

"I certainly would. I'll be ready to leave for Atlanta in less than ten minutes."

"I expected that, Doctor, and a car is already on its way to pick you up. I'll meet you at Langley Field where a plane is already being tuned up and will be ready to take off by the time we get there."

"Good work, Carnes. I'll see you at the field."