"To be sure!" ejaculated Captain Hickman. Then he introduced the first mate. "This is Mr. Jong, my first officer."

The impeccable first mate bowed, his polite smile increasing the Oriental aspect of his features to a marked degree.

DOC SAVAGE and Renny went into consultation with Captain Hickman in the latter's private sitting room.

"We have reason to believe three of my friends are being held prisoner somewhere aboard this liner," Doc explained bluntly. "It is a human impossibility for two men, or even three or four, to search a boat this size. The captives could easily be shifted to a portion of the vessel which we had already searched, and we would be none the wiser. We therefore wish the aid of your crew, such of them as you trust implicitly."

Captain Hickman rubbed his brow. He seemed too surprised for words.

"It is extremely important the search be conducted with the utmost secrecy," Doc continued. "Any alarm will mean the death of my friends."

"This is highly irregular!" the commander objected.

"Possibly."

"Have you any authority to command such a search?"

The flaky gold in Doc's eyes began to take on a molten aspect, an indication of anger.

"I had hoped you would cooperate freely in this matter." No wrath was apparent in his powerful voice.

At this point a radio operator entered the cabin, saluted briskly, and presented Captain Hickman a message.

The florid commander read it. His lips compressed; his eyes hardened.

"No search of this ship will be made!" he snapped. "And you two men are under arrest!"

Renny sprang to his feet, roaring: "What're you trying to pull on us?"

"Calm down," Doc told him mildly. Then he asked Captain Hickman: "May I see that radiogram?"

The skipper of the Malay Queen hesitated, then passed the wireless missive over. It read:

CAPTAIN HICKMAN

COMMANDER S S MALAY QUEEN

SEARCH YOUR SHIP FOR MEN NAMED CLARK SAVAGE JR

ALIAS DOC SAVAGE AND COLONEL JOHN RENWICK ALIAS

RENNY RENWICK STOP ARREST BOTH AND HOLD STOP

WANTED FOR MURDERING SEVERAL MONGOLIANS AND

CHINESE IN NEW YORK CITY STOP SAN FRANCISCO

POLICE DEPARTMENT

"Holy cow!" Renny thundered his pet expletive. "How did

they know we were aboard?"

"They didn't," Doc said grimly. "This is Tom Too's work. Call that radio operator in here, captain. We'll see if he really received such a message."

"I'll do nothing of the sort!" snapped Captain Hickman. "You two are under arrest."

With this statement the florid skipper wrenched open a drawer of his desk. He grasped a revolver reposing there.

Doc's bronze hand floated out and came to rest on Captain Hickman's right elbow. Tightening, the corded bronze digits seemed to bury themselves in the florid man's flesh.

Captain Hickman's fingers splayed open and let the gun drop. He spat a stifled cry of pain.

Renny scooped up the fallen weapon.

Jong, the first mate, pitched into the sitting room, drawn by his skipper's cry. Renny let Jong look into the noisy end of the revolver, saying: "I wouldn't start anything, mister!"

Doc released Captain Hickman's elbow. The skipper doubled over, whining with agony, nursing his hurt elbow against his egg of a stomach. At the same time he goggled at Doc's metallic hand, as ?though unable to believe human fingers could have hurt him so.

Jong stood with hands half uplifted, saying nothing.

"We'll go interview the radio operator," Doc declared.

THE radio installation on the Malay Queen consisted of a large lobby equipped with a counter, where messages were accepted, and two inner rooms holding enormous banks of apparatus.

"The message was genuine, all right!" insisted the radio operator. He gave the call letters of the San Francisco station which had transmitted the missive.

Seating himself at the semiautomatic "bug" which served in lieu of a sending key, Doc called the shore station and verified this fact.

"Let's see your file of sent messages!" Doc directed the operator.

A brief search turned up one which had been "marked off" as sent not more than twenty minutes ago. It was in code, the words meaningless.

"Who filed this?"

"I don't know," insisted the radio man. "I discovered it lying on the counter, together with the payment for transmission and a swell tip. Some one came in and left it without being observed."

"This Tom Too must be half ghost!" Renny muttered. He still held the captain's revolver, although neither the skipper of the Malay Queen nor First Mate Jong were offering resistance.

Doc studied the cipher message. It read:

JOHN DUCK

HOTEL KWANG SAN FRANCISCO

DTOSS EARVR AAGSE IAHBR OOAFR ODIRDA

There was no signature. Radiograms are often unsigned, which made this fact nothing unusual.

"Whew!" Renny grunted. "Can you make heads or tails of that mess of letters, Doc? It seems to be a five-letter code of some kind."

"The last word has six letters," Doc pointed out. "Let's see what a little experimenting will do to it."

Seating himself before a sheet of blank paper, a pencil in hand, Doc went to work on the cipher. His pencil flew swiftly, trying different combinations of the letters.

Five minutes later he got it.

"The thing is simple, after all," he smiled.

"Yeah?" Renny grunted doubtfully.

"The first cipher letter is the first in the translated message," Doc said rapidly. "The second cipher letter is the last in the message. The third cipher letter is the second in the message; the fourth cipher letter is next to the last in the message, and so on. The letters are merely scrambled systematically!"

"Hey!" gasped Renny. "I'm dizzy already."

"It sounds complicated until you get it down on paper. Here, I'll show you."

Doc put down the cipher as it stood.

DTOSS EARYR AAGSE IAHBR OOAFR ODIRDA

Under that he wrote the translation.

DOCSAVAGEABOARDRADIOFORHISARREST

Renny scowled at this. Then its meaning became clear — the words were merely without spacing.

"Doc Savage aboard. Radio for his arrest!" he read aloud.

"The Instructions Tom Too sent to a confederate in San Francisco," Doc explained. "Evidently they had agreed upon a course of action should we be discovered aboard."

POWERFUL equipment was a part of the installation aboard the Malay Queen. Using this, it was possible for passengers aboard to carry on a telephone conversation with any one ashore, exactly as though there was a wire connection.

Using this, Doc now proceeded to do some detective work.

He called the Hotel Kwang in San Francisco.

"Have you a guest registered under the name of John Duck?" he asked.

"John Duck checked out only a few moments ago," the hotel clerk informed him.

Doc's second call was to the San Francisco police chief. He cut in a loud-speaker so every one in the Malay Queen radio room could hear what the police chief had to say.

"Have you received any request to arrest Doc Savage," Doc asked.

"Certainly not!" replied the San Francisco official. "We have a suggestion from the New York police that we offer Savage every possible cooperation."

Doc rested his golden eyes on Captain Hickman. "You satisfied?"

Captain Hickman's ruddy face glistened with perspiration. "I — er — yes, of course."

Doc severed his radio connection with San Francisco.

"I wish your cooperation," he told Captain Hickman. "Whether you give it or not is up to you. But if you refuse, you may rest assured you will lose your command of this ship within thirty minutes."

Captain Hickman mopped at his face. He was bewildered, angry, a little scared.