The Caves of Fear: A Rick Brant Science-Adventure Story

"They're all different," Rick said. "The pages change each year. Which one did he use?"

Scotty's forehead furrowed. "Which one did he memorize? It was an old one, but I can't remember the date."

"Got it," Rick said. "Remember the letter L? The twelfth letter of the alphabet. It must be the 1912 edition."

Scotty surveyed the shelf. "Which we don't have," he said.

Rick groaned. "No!"

Hartson Brant called from the dining room. "Haven't you solved that cipher yet?"

The boys walked dejectedly back to join the others. Rick explained that the right volume was missing. The Spindrift files just didn't go back that far.

"Sit down and eat your dinner," Hartson Brant said. He sliced roast for them, his eyes thoughtful. "Something's wrong with your reasoning," he said, as he filled Rick's plate. "Would Chahda have a 1912 edition with him in Singapore? I doubt it. More likely he'd have a more recent one."

"But the letter L has to mean something," Barby protested.

"What could it mean but twelve?" Rick asked, and the answer struck him before the words were out. He shouted, "I know! It could mean fifty! L is the Roman numeral fifty."

Barby clapped her hands. Scotty reached over and pounded Rick on the back.

"That's it," Hartson Brant said approvingly. "I'll make a wager on it. Chahda used the 1950 edition."

Rick pushed back his chair, but the scientist's voice stopped him.

"Let's rest on our laurels, Rick. Finish dinner first, then we'll all retire to the library and work it out."

Because they were burning with impatience, the three younger members of the Spindrift family did not enjoy the meal, but they made a pretense of eating. Then, an eternity later, Hartson Brant took the last sip of his coffee and grinned at Rick. "Shall we get to it?"

"Shall we!" Barby led the way, holding the cable high.

The first part was easy. Since most pages in the Almanac had three numbers, they assumed that the first three numbers in each code group referred to the page. Similarly, they assumed that the second two numbers referred to the line. That left two numbers for the position of the word on the line.

With nervous fingers Rick turned to Page 521 of the 1950 edition and counted down 30 lines. He hesitated over the subtitles, then decided to count them too. At the proper line, he looked up at Scotty and Barby who were watching over his shoulder.

"But there are two columns."

"Don't worry about the columns," Scotty advised. "I don't think Chahda would pay any attention to the columns, because it would mean extra numbers in each group. Count right across and don't pay any attention to the dividing line."

Rick did so. "It doesn't come out right," he complained. "The number is 39, but there are only 17 words on the whole line."

Barby sighed. "Maybe we're wrong all the way around."

"I don't think so," Hartson Brant said. He was sitting in a comfortable chair, smoking an after-dinner pipe. "The logic of the thing appeals to me. Do you suppose Chahda would know about nulls?"

"What's a null?" Scotty asked.

"In cryptography it's a number, or letter, thrown in for the sake of appearance, or to confuse."

"Chahda might know," Rick said. "That brown head of his is crammed full of more odd chunks of information than you could imagine. But if there's a null in this, which figure is it?"

"Try it both ways," Barby urged. "Here, I'll do it." She counted across the line. "The third word is 'seventeen.'" She wrote it down. "The ninth word is 'come.'"

"Could be either," Scotty mused. "But 'come' sounds more likely. Let's try the next group."

That was 6231581. Rick turned to Page 623 and counted down 15 lines, including the title. However, he didn't count the page heading. The heading was on the same line as the page number. Both were above a line drawn across the top of the page, and it seemed sensible to start below the line.

"There aren't 81 words on the lines," he said. "So that means another null, maybe. The first word is 'both' and the eighth word is 'may.'"

Barby wrote them down. "It all makes sense," she pointed out. "It could be, 'Seventeen may,' or 'come both.'"

"Keep going," Scotty urged. "Try another one."

The third group gave them a choice of "Cheyenne," which seemed unlikely, or "bad."

"He couldn't be talking about Cheyenne," Rick said. "The word must be 'bad.' That means the first figure of the pair is the null, because it's the second figure that stands for 'bad.'"

"Sounds reasonable," Scotty agreed. "Keep plugging."

So far, the probable words were: Come both bad.

Page 276 in the fourth group turned out to be a table of atomic weights. Line 86 was the element tantalum. If the first figure of the last pair was assumed to be a null, the word was the symbol for tantalum: "Ta."

Rick stared at it. "Something's wrong. This doesn't make sense."

Barby asked impatiently, "How do we know?"

Rick yielded and moved to the next group. It gave the word "rubles." "That's Russian money," he said.

The trio looked at it in bewilderment, then Scotty suddenly let out a yell of laughter. "I've got it! Can't you see? 'Ta' and 'rubles' go together! 'Tarubles.' Troubles!"

Then they were all howling with joy. Leave it to Chahda to dream up something like that, Rick thought. So far, the message made sense. Come both, bad troubles.

He turned the pages and counted feverishly. The sixth group gave "am," the seventh "in."

The eighth group gave the message an ominous tone.

Come both. Bad troubles. Am in danger.

The scientists and Mrs. Brant were looking over Rick's shoulder now, too.

The ninth group stopped them for a moment because the pair of figures standing for the word was 14. If the figure 1 was a null, the word was "the." But there were more than 14 words in the line, and the 14th was "my."

Rick looked at the faces around him. "I think it's 'my' because he must have had a reason for using nulls. If I were making up the code, I'd use them because sometimes there are enough words in a line so you need two figures and sometimes not. But you always have to put down two figures so the groups will be even."

"Good thinking," Rick's father complimented him. "Go ahead on that basis. But hurry up. The suspense is awful."

There was a chorus of agreements.

The next word was "boss."

"He was working, then," Scotty guessed. "That must be it, if he has a boss."

Rick hurried to the next group. It produced "Carl." Page 439, the 96th line, gave "Bradley." Then the boss's name was Carl Bradley.

Hartson Brant gave a muffled exclamation. Scotty turned quickly. "Do you know that name, Dad?"

"Yes. But let's get the rest of the message. Quickly, Rick."

The words appeared in rapid succession, with a pause now and then to solve a new difficulty. Once, the lines across the columns were not even and a ruler had to be laid across to find the word. Again, a null appeared as the first number in the page group. Chahda had used it because the page was 51 and he needed a third figure to round out the group. That was easy to spot because the group read 951 and the book had only 912 pages.

In the last series of groups Rick came across another double word like "tarubles." This time, "be" and "ware" combined to make "beware." Then, the very last word stopped them for a moment. It was "umbra."

"What's that?" Scotty asked.

"The shadow cast by the moon during an eclipse of the sun," Julius Weiss answered. "Or part of it, rather. There are two shadows. The umbra and the penumbra."

Barby ran for a dictionary and leafed through the pages quickly. "I have it," she said. "Listen. It's from the Latin for 'shadow,' and it means 'a shade or shadow.'"

"Shadow it is," Rick said, and wrote it down. Then, slowly, he read the full message to the serious group around him.

COME BOTH. BAD TROUBLES. AM IN DANGER. MY BOSS, CARL BRADLEY, DISAPPEARED. GOVERNMENT WILL ASK SCIENTIFIC FATHER DO SPECIAL WORK. MUST TAKE. GET JOBS, MEET ME HONG KONG GOLDEN MOUSE. WATCH CHINESE WITH GLASS EYE, HE DANGEROUS. AND BEWARE LONG SHADOW.

CHAPTER III

Heavy Water

Hartson Brant walked swiftly to the telephone and picked it up.

"What's the matter, Dad?" Rick asked quickly. The scientist had a strange look on his face.

"Give me the telegraph office," Hartson Brant said. He put his hand over the mouthpiece. "I'll tell you in a moment. I want to get a wire off immediately." He spoke into the phone again. "Western Union? This is Spindrift, Brant speaking. I want to send a straight telegram. Yes. To Steven Ames."

Rick gasped. Steve Ames was the young intelligence officer of JANIG, the secret Army-Navy group charged with protecting the security of American government secrets. The Spindrift group of scientists had worked with Steve in solving The Whispering Box Mystery.

Scotty's fingers bit into Rick's arm.

Hartson Brant gave the address. "Here's the message. 'Have reconsidered your request basis of new information just received here. Urge you come or phone at once.' That's it. Sign it 'Brant, Spindrift.' Yes. Charge to this number."

He waited until the telegraph office had read back the message, then hung up and turned to the waiting group.

"Three days ago I had a phone call from Steve Ames. He asked if I could undertake a special job for the government that would require me to go overseas at once for an indefinite time. I was forced to decline because obviously I can't leave now with these staff changes about to take place."

The scientist knocked the ashes out of his pipe, his face thoughtful.

"Steve wouldn't take no for an answer. He insisted that the job was of the utmost importance, and he added that it concerned an old college chum of mine." He paused. "His name is Carl Bradley."

Rick's eyes met Scotty's.

"He said it was an urgent job, but that he would give me a few days to think it over, to see if I couldn't rearrange my affairs in some way. I assured him it was no use, that I couldn't possibly leave, but he said to take until Saturday to consider it. That's tomorrow."

Rick whistled. "Some timing."

"It's a lot more than mere coincidence," Hartson Brant said. "But I don't know any more about it than what I've told you."

"Who is Carl Bradley?" Weiss asked.

"I'm surprised you haven't heard of him, Julius. He has a considerable reputation as an ethnologist. He and Paul Warren and I were in school together. We lost track of him for a while, then he wrote from China. He had spent several years inland, living with the Chinese, as one of them. He produced some immensely valuable studies. Those, and his rather remarkable ability to speak and act like a Chinese earned him the nickname of 'Chinese Bradley.' He had lived most of his life since school in one part of Asia or another. But I'm sure I can't guess what his connection is with this special job of Steve's, or how he happened to become Chahda's boss."

"Or why he's missing," Barby added.

The cable had created a mystery that demanded a solution, but no amount of discussion answered the questions it raised. Finally, Mrs. Brant broke up the debate by pointedly remarking on the lateness of the hour. Reluctantly, the family started for bed.

As Rick undressed, he continued the discussion through the door connecting his room and Scotty's. "Chahda's pretty sure we'll hurry to Hong Kong."

"Is he wrong?" Scotty demanded.

"I don't know," Rick said. "It depends on a lot of things. We can't go unless we get jobs, and Steve evidently didn't say anything to Dad about the rest of the staff, including us."

"Dad hasn't even said he'll go," Scotty reminded.

"Doesn't saying he has reconsidered mean that he'll go?"

"Could be. Or maybe it just means he's willing to talk some more about it. We should have pinned him down."

"We will," Rick said. "In the morning."

He lay awake for long hours, staring into the darkness and trying to piece together Chahda's references to a golden mouse, a Chinese with a glass eye, and a long shadow. It was no use. But there was no mistaking the urgency of his friend's plea.

Where was Chahda now? At a guess, somewhere between Singapore and Hong Kong. But whether by land or sea or air, Rick couldn't imagine. Nor could he even venture a wild guess at what kind of danger Chahda faced.

After a long time he fell asleep, but it was fitful sleep broken by frequent awakenings.

In the morning, the discussion resumed over breakfast, bringing forth wild speculations from Barby. Rick had to grin at her flights of fancy.

"One thing seems sure," Scotty offered. "Chahda was in a big hurry."

"What makes you think so?" Mrs. Brant asked. "Barby! Please stop feeding Dismal at the table."

Dismal turned beseeching eyes to Rick in a plea for moral support, but his young master was listening to Scotty.

"The words he used. Like putting together an atomic symbol and Russian money to make 'troubles,' and using 'umbra' instead of shadow. I'm sure in a big book like The World Almanac troubles and shadows are mentioned somewhere. But he didn't have time to search. He took the first possibilities that came along."

Rick nodded approval. "That figures. But why didn't he have time?"

Scotty shrugged. "Your guess is as good as mine. Maybe better."

Julius Weiss, who had tired of the discussion and started to the lab, ran back into the house. "There's a plane heading this way," he announced. "I'm sure it's coming here, because it's down pretty low."

The conversation ended abruptly. Rick and Scotty were first out on the lawn. The engine noise of the plane was loud.

Rick saw it first, a sleek, four-place cabin job, circling wide out over the water, losing altitude. In a few moments it banked sharply behind the lab building, straightened out, and cut the gun. Rick was running toward the end of the grass strip even before the plane settled smoothly to the ground.

"Steve Ames," he said to himself. "I'll bet it is." The JANIG officer had wasted no time!

Sure enough, Steve was the first out of the plane. Rick saw that he was the only passenger. The pilot got out then, and Rick recognized him as one of the JANIG operatives who had chased the Whispering Box gang across Washington.

Steve and Rick shook hands, grinning at each other, then Rick greeted Mike, the pilot.

"Didn't think we'd be needing Spindrift again so soon," Steve said. He walked to meet the others and shook hands all around. "Let's get busy," he said to Hartson Brant.

Rick, Scotty, and Barby followed the two into the library. Mrs. Brant took the pilot into the dining room for coffee while Professor Weiss excused himself and went on to the laboratory. His apparent lack of interest would have amazed anyone who didn't know him, but Rick knew that when Julius Weiss was wrapped up in one of his theoretical math problems, nothing else on earth could find room in his mind.

Steve looked at the scientist. "What caused you to reconsider?"

"This." Hartson Brant handed him the translation of Chahda's cable, then the original. "We broke the code last night. It was a book code, using The World Almanac. Chahda knew we'd be able to puzzle it out."

Steve scanned the number groups briefly. "Clever," he commented. He read through the clear copy twice, and his jaw tightened. "This explains something that has puzzled me."

"A good thing," Rick said. "Because all we got was the puzzlement. No explanations."

Steve tapped the cable thoughtfully. "I hate to ask you to tackle this job, but you must have some ideas about it or you wouldn't have sent that wire."

Hartson Brant nodded. "I explained my situation to you on the phone when you called a few days ago. The situation hasn't changed, but I must admit this cable from Chahda puts a new light on the matter. That boy is a member of the family."

"Then you'll go?"

"I don't want to, quite frankly. I will if there is no alternative. I lost a lot of sleep last night making that decision. But first, I want to propose that some member of my staff go in my stead."

Steve walked to the desk and perched on its edge. "Which one?"

"You know them all. You also know their specialties. Which of them would fit your requirements best?"

"Zircon. He's a nuclear physicist."

Rick held his breath. Steve was continuing:

"Chahda urges Rick and Scotty to get jobs, too. I hadn't considered that, but it's not a bad idea."

Rick closed his eyes and let out his breath in a sigh of relief. Scotty nudged him.

Hartson Brant asked, "Then you will consider Zircon as my substitute? Always on condition that he will go, of course."

Steve nodded. "I'd prefer you, but I'll take Zircon, if I can make a condition of my own, and that is that you'll fly to the Far East on a moment's notice if he and the boys can't handle it."

Rick looked at his father anxiously. Hartson Brant had not given his permission for them to make a trip, but evidently it was all right. The scientist nodded.

"I'll agree to that." He went to the telephone and picked up the instrument. "Operator, I want to place a long-distance call."

Steve winked at the boys. Then, as Hartson Brant placed the call to Zircon in New Haven, Connecticut, the JANIG man said, "Going to be a couple of tourists at government expense, huh? Pretty soft."

"Maybe," Rick said, grinning. "That cable doesn't sound like anything soft."

Steve got serious. "You two proved yourselves in Washington, so far as I'm concerned. You can make yourselves useful, and you'll provide a good cover for Zircon."

"What kind of cover?" Barby asked.

Steve smiled at her. "Women can't keep secrets, I'm told."

"I can," Barby retorted swiftly.

Steve held up his hand for silence. Hartson Brant had Zircon on the line. The scientist outlined Steve's proposal in a few words, and gave Zircon the contents of Chahda's cable. Then he listened to Zircon while Rick fidgeted anxiously. Finally, Hartson Brant said, "All right, Hobart. Tell your people up there that I'll take your lectures. We'll see you later today." He hung up and nodded at Steve.

"Hobart had lectures scheduled for next week, but I can take them for him. He'll be down this afternoon, and, he says, he'll be ready to leave in the morning if necessary."

"Good!" Steve nodded at Barby. "Even if you can't go on the trip, you can make yourself useful. Want to place a call to Washington for me?"

"Yes," Barby said eagerly. "Where to?"

Steve gave her the number. Then, while she was placing the call, he said, "Now, I'll tell you what I know."

Rick's heart beat faster. Now he would learn what was behind Chahda's cable!

"The day before I phoned here," Steve began, "my office received a message from Carl Bradley. It was a top secret message sent to us via the American consulate general's channels from Singapore. I'd better explain first that Carl is a JANIG man. His knowledge of that part of the world has made him invaluable, and he works for us secretly while doing his routine work as an ethnologist. That is top secret information that must never be repeated outside this room."

"You can depend on us," Hartson Brant assured him.

"I know it. To go on. His job is gathering information about persons who show too much interest in operations within our embassies and consulates. However, the cable we got from him wasn't quite in that line."

Steve paused to see how Barby was getting along. She was trying to listen to him and the operator at the same time.

"This cable," Steve continued, "said he had accidentally made a discovery of something potentially dangerous to America. He asked for a competent nuclear physicist, and he named you, Hartson, to be sent to Singapore at once to check on his finding, and to locate, if possible, the source of the stuff he had discovered. We haven't heard from him since. From Chahda's cable, it's evident something has happened to him. And on the basis of the cable, I think we'll send Zircon and you boys to Hong Kong first."

Scotty put into words the question that was in Rick's mind. "What was it that he discovered?"

Steve's lips tightened, then he said: "Heavy water!"

CHAPTER IV

Project X

"Heavy water!" Hartson Brant exclaimed softly.

Rick and Scotty looked at each other blankly.

And at that moment, Barby completed the connection and called to Steve. He strode to the phone and picked it up. "Who's this? All right. Steve Ames here. Take down these names. Hobart Zircon. Richard Brant. Donald Scott. You'll find full data on them in the files. Prepare travel orders and get tickets for all three to Hong Kong via the first plane leaving New York after 7:00 p.m. tomorrow night. Arrange for a letter of credit in the usual amount on the National City Bank of Washington, and have the bank make arrangements with all their Far East branches. Put all three on the pay roll at the same grades they held before. Get passports for them with visitor's visas for the Philippines, Hong Kong, Indo-China, Indonesia, Siam, and China. We don't know where they'll end up. Then put all that stuff in an envelope and get it to me here at Spindrift by special messenger … wait, never mind that. I'll send Mike back right away, and he can bring it to me. Now read those instructions back."

Steve listened for a moment. "Right. Get going. What? Oh, charge the whole thing to a new case file. Mark it Project X."

He disconnected and turned to the group. "Now," he said grimly, "let's talk turkey."

He nodded at Rick and Scotty. "Zircon said he could leave in the morning, if necessary. That's rushing you a little too much. So I've given you until tomorrow night."

Rick grinned. Once things started to move with Steve Ames, they moved strictly jet-propelled.

"What are we supposed to do?" Scotty asked.

"Find Bradley. If you can. But don't spend too much time searching. Getting all the dope – and I mean all– on that heavy water is the reason for your going out there. If you find Bradley, he can help. Maybe Chahda can help, too. But never forget for a minute that tracking down that heavy water is your mission."

"If we don't find Bradley, we won't know how to get started," Rick pointed out.

Steve grunted. "No? If I believed that, I'd have gone somewhere else for help. I came here because I knew Spindrift could give me ingenuity as well as scientific knowledge. And you hadn't better let me down!"

"We won't let you down," Scotty assured him.

Barby chimed in indignantly, "Of course they won't."

Steve smiled. "Don't worry. I'm not afraid of their falling down on the job. But it's a big one. I'll tell Zircon this when he comes, but you can be thinking it over in the meantime. You're to find out who is bringing heavy water to the Asia coast and what they're doing with it. You're to find out where it comes from, and why it is being made. You're to get samples and send them back here. And most important of all, you're to locate and pinpoint for us any industrial plants you find."

Scotty scratched his head. "Fine. Only let's get back to the beginning. What is heavy water? And why are you so excited about it?"

"I don't know, either," Barby added.

Hartson Brant looked at his son. "You do, don't you, Rick?"

"I know what it is, but I don't know why it's so important to Steve," Rick said. He had read a great deal about heavy water in studying elementary physics. It had many uses in physics experiments.

"Let's see how much you know," Steve directed. "Sound off."

Rick searched his memory, trying to marshal all the facts he knew. "Well," he began, "ordinary water is composed of oxygen and hydrogen. In every water molecule there are two atoms of hydrogen and one of oxygen. The important part, for what we're talking about, are the hydrogen atoms. Hydrogen is the lightest element, and it has the simplest atom. There's just one proton and one electron."

He looked at his father, waiting for a nod to tell him he was on the right track. When the scientist nodded approval, he went on.

"That kind of hydrogen atom has a mass of one, as the scientists say. But there are other kinds of hydrogen atoms, and they are pretty rare, called isotopes. An isotope is just a different variety of the ordinary kind of atom in each element. The thing that makes it different is a change in the nucleus. Well, hydrogen has two isotopes. One kind, which has a mass of two, is found in nature. It is called deuterium. Its nucleus is called a deuteron. Another kind, which can be made in a nuclear reactor, is called tritium. A little of it is found naturally but not enough to count for much."