He took a step forward into the cabin. Her heart contracted with a spasm of fear. She was the useless member of the party and he had good cause to hate her. Perhaps he had not just come to see if she was asleep, but had decided that the time had come to rid himself of her. She was still holding the bread knife. Instinctively her grasp tightened on its handle. Had he touched her she would have flung back the blanket and lunged blindly at him. But after a moment he stepped back, murmured a few sentences of what sounded like gibberish, and closed the door.

Sweating from every pore she continued to lie there, still not quite certain that he had left her. It seemed an age before she could summon up the courage to turn her head a little sideways and steal a swift glance from beneath still lowered eyelids. She let her breath go in a great sigh. Except for herself, the faint blue light showed the cabin to be empty.

Once more she resigned herself to wait with patience, until it could be reasonably assumed that the coast was clear. Every few minutes she looked at her wrist watch. Its hands seemed to move with incredible slowness, but minute by minute an hour crept by. Getting out of the bunk, she put on her skirt and cautiously opened the door. No sound came to her and momentarily her hopes soared again. By playing on Wash's resentment at having been tricked by the Great Ram and doing her utmost to strengthen the feeling she had instilled into him that, as a Satanist, he had backed the wrong horse, she might yet induce him to make another attempt to sabotage the rocket and, this time, perhaps they would succeed.

Next moment her hopes fell to zero. The door stood open but she could not pass through the doorway. The Great Ram had erected an invisible barrier there that held her a prisoner more surely than any locks and bolts. Strive as she would, just as had been the case at the Cedars, she could not put a foot over the threshold.

*****

Only the hands of Mary's watch told her that she had got through the night. Lying fully dressed on her bunk, through parts of it she had dozed; but she had the impression that she had not dropped off, even for a few moments, and certainly her brain had never ceased to revolve round and round the coming day and the terrible fate that it might usher in for millions of helpless people.