They wanted to kill him. He knew that as soon as they dropped him to the cold metal of the deck and wrestled with the handles of the doorway beside him, the same one that Alec Durell had gone through in Southampton. But there he had a fall of twenty-five feet to an unwanted bath. Here there were 12,000 feet of fall to brutal death.

With a heave the door was thrown open and the three-hundred mile an hour slipstream tore through the opening, drowning out even the roar of the four great engines. It was then that Washington did what he knew he had to do.

He straightened his bent legs so they caught the nearest man behind the knees. For a brief instant the dark stranger hung there, arms flailing wildly before vanishing through the opening into the frigid night outside.

Gus did not wait until the other had gone but was wriggling across the floor to the alarm of a fire box, struggling to his feet and butting at it with his head until he felt the glass break and slice into his skin. Turning to face the remaining man, swaying as he did so.

There is no warning to anoxia, simply a slide into unconsciousness then death. He had the single thought that the bulbous mask must contain an oxygen tank or his assailant would be falling, too. He must stay awake. Fight. Unconscious, he would be dragged to the opening and dispatched into the night like the other man.

His eyes closed and he slid slowly down and sprawled, oblivious, on the deck.

“A fine sunny morning, sir, bit of cloud about but nothing to really speak of.”

The steward flicked back the curtain so that a beam of molten sunlight struck into the cabin. With professional skill he pulled open the drawer on the night table and put the tray with the cup of tea upon it. At the same time he dropped the ship’s newspaper onto Washington’s chest so that he awoke and blinked his eyes open just as the door closed silently behind the man. He yawned as the paper drew his attention so that he glanced through the headlines. HUNDREDS FEARED DEAD IN PERUVIAN EARTHQUAKE. SHELLING REPORTED AGAIN ALONG THE RHINE. NEW YORK CITY WELCOMES CAESAR CHAVEZ.

The paper was prepared at the line’s offices in New York, he knew that, then sent by radiocopy to the airship. The tea was strong and good and he had slept well. Yet there was a sensation of something amiss, a stiffness on the side of his face and he had just touched it and found a bandage there when the door was thrown open and a short, round man dressed in black and wearing a dog collar was projected through the doorway like a human cannonball, with Wing Commander Mason close behind him.

“Oh my goodness, goodness gracious,” said the spherical man, clasping and unclasping his fingers, touching the heavy crucifix he wore about his neck, then tapping the stethoscope he wore over it as though unsure whether God or Aesculapius would be of most help. “Goodness! I meant to tell the steward, dozed off, thousand pardons. Best you rest, sure of that, sleep the mender—for you not me, of course. May I?” Even as he spoke the last he touched Gus’s lower eyelid with a gentle finger and pulled it down, peering inside with no less concern and awe than he would have if the owner’s eternal soul had rested there.

From confusion Gus’s thoughts skipped instantly to dismay, followed thereafter by a sensation of fear that sent his heart bounding and brought an instant beading of perspiration to his brow. “Then it was no dream, no nightmare,” he breathed aloud. “It really happened.”

The ship’s commander closed the door behind him and, once secrecy was assured, he nodded gravely.

“It did indeed, Captain Washington. Though as to what happened we cannot be sure and it is my fondest wish that you enlighten me, if you can, as soon as possible. I can tell you only that the fire alarm sounded in the port engine room at 0011 hours Greenwich Mean Time. The first engineer, who was attending an engine in the starboard engine room at the time, responded instantly. He reports he found you alone and unconscious on the deck, dressed as you are now, with lacerations on your face, lying directly below the fire alarm. Pieces of glass in your wounds indicate you set off the alarm with your head and this was necessitated by the fact that your ankles and wrists were secured by handcuffs. An access door in the deck nearby was open. That is all we know. The engineer, who was wearing breathing equipment, gave you his oxygen and pulled you from the room. The Bishop of Botswana, this gentleman here, who is a physician, was called and he treated you. The manacles were cut from you and, under the bishop’s direction, you were permitted to sleep. That is all we know. I hope that you will be able to tell us more.”

“I can,” Gus said, and his voice was hoarse. The two intent men then saw his calm, almost uncomprehending expression change to one that appeared to be that of utter despair, so profound that the priestly physician sprang forward with a cry only to be restrained by the raised hand of his patient who waved him back, at the same time drawing in a deep breath that had the hollow quality of a moan of pain, then exhaling it in what could only be a shuddering sigh.

“I remember now,” he said. “I remember everything. I have killed a man.”

There was absolute silence as he spoke, haltingly at first as he attempted to describe his confusion upon awakening in distress, faster and faster as he remembered the struggle in the dark, the capture, the last awful moments when another had vanished into eternity and the possibility of his own death had overwhelmed him. When he had done there were tears in the bishop’s eyes, for he was a gentle man who had led a sheltered life and was a stranger to violence, while next to him the captain’s eyes held no tears but instead a look of grim understanding.

“You should not blame yourself, there should be no remorse,” Wing Commander Mason said, almost in the tones of a command. “The attempted crime is unspeakable. That you fought against it in self-defense is to be commended not condemned. Had I been in the same place I hope my strength of endeavor and courage would have permitted me to do the same.”

“But it was I, not you, Captain. It is something I shall never forget, it is a scar I shall always carry.”

“You cannot blame yourself,” said the bishop, at the same time fumbling for his watch and Gus’s wrist in sudden memory of his medical capacity.

“It is not a matter of blame but rather one of realization. I have done a terrible thing and the fact that it appears to be justified makes it none the less terrible.”

“Yes, yes, of course,” said Wing Commander Mason, a little gruffly, tugging at his beard at the same time. “But I am afraid we must carry this investigation somewhat further. Do you know who the men were—and what their possible motive might be?”

“I am as mystified as you. I have no enemies I know of.”

“Did you note any distinguishing characteristics of either of them? Some tone of voice or color of hair?”

“Nothing. They were dressed in black, masked, wore gloves, did not speak but went about this business in complete silence.”

“Fiends!” the bishop cried, so carried away in his emotions that he crossed himself with his stethoscope.

“But, wait, wait, the memory is there if I can only grasp it. Something, yes—a mark, blue, perhaps a tattoo of some kind. One of the men, it was on his wrist, almost under my nose where he held me, revealed when his glove moved away from his jacket, on the inner side of his wrist. I can remember no details, just blue of some kind.”

“Which man?” asked the captain. “The survivor or the other?”

“That I don’t know. You can understand this was not my first concern.”

“Indeed. Then there is a fifty-fifty chance that the man is still aboard—if he did not follow his accomplice through the opening. But by what excuse can we examine the wrists of the passengers? The crew members are well known to us but—” He was silent on the instant, struck by some thought that darkened his face and brought upon it a certain grimness unremarked before. When he spoke again it was in the tones of absolute command.