"You always win," Herb complained.

"Just how much chance have you got?" Tommy asked Caroline.

She shrugged.

"It works out on paper," she declared. "When we came here the Engineers had to distort time and space to get us here, but they distorted the two equally. Same amount of distortion for each. But here you have to distort time a whole lot more. Your factors are different. But we have a good chance of getting where we're going?’

"If it's there when you get there…" Herb began, but Kingsley growled at him and he stopped.

Caroline was talking swiftly to Kingsley.

"The Engineer understands the equation for the hyperspheres," she was saying. "Work with him. Try to set up several of them in our own space and see if it isn't possible to set up at least one outside the universe. Pinch it off the time-space warp and shove it out into the inter-space. We may be able to use it later on.”

A blast of sound smote them and the solid masonry beneath their feet shivered to the impact of a bomb. For a single second the flashing blaze of atomic fury made the brilliant sunlight seem pale and dim.

"That one was close," said Tommy.

They were used to bombs now.