"Don't look like that. The fact that you're here alive is a miracle that makes up for his escape. If you could have seen yourself, and that girl, when the police brought you back from Chichester's house! As soon as they set you down in the doctor's rooms, you and the girl came together. You fought again for her purse, as you say you started to do in Chichester's house ten hours ago. But you moved with such horrible slowness! It was like watching a slow-motion picture. It took you hours to raise your arm, hours to take the purse from her hand. And your expression changed with equal slowness.... I can't tell you how dreadful it was!" "All due, as I said, to this," Keane sighed. He stared at the little metal cage he had taken from the purse. "The latest product of Doctor Satan's warped genius. A time-diverter, I suppose you might call it." "I didn't understand your explanation in Grays' rooms, after you'd brought those people out of their dreadful coma," said Beatrice. "I'll try again." Keane held up the geometric figure. "Time has been likened to a river. We don't know precisely what it is, but it seems that the river simile must be apt. Very well, we and all around us float on this river at the same speed. If there were different currents in the same river, we might have the spectacle of seeing those nearby move with lightning rapidity or with snail-like slowness as their time-environment differed from ours. Normally there is no such difference, but with this fantastic thing Doctor Satan has succeeded in producing them artificially. "He has succeeded in working out several sets of angles which, when opposed against each other as this geometric figure opposes them, can either speed up or slow down the time-stream of whatever it is pointed at. The final angle is formed by this movable bar in its relation to the whole. By its manipulation, time can be indefinitely retarded or hastened. He utilized the bizarre creation in this way: