"Yes?"
"This recording of the Z-wave was made from Z-wave Central?"
"Yes!"
"Just for the purpose of circumventing any such odium of doubt, is there any method by which you can definitely determine the time of origin of this recorded transmission?"
"Not at the present. It can be established by the radio beacon records that I was on Proxima I at that time—what I hope to do is to have the unknown woman come forward and identify herself and the time she used the Z-wave."
"Then other than that there is no way of proving that this recording might have been made on terra a month before you left?"
"I—"
But Thorndyke interrupted. "Gentlemen," he said, "no man in his right mind would attempt a fraud upon this body. I have no doubt. I firmly believe that Paul Grayson has presented evidence that he has collected in true scientific honesty!"
This brought another round of cheering. And in the midst of it all, the questioner came walking down the aisle toward the platform. Out of the shadows he came, and Paul tensed for the imminent battle of wits, for the questioner was none other than Chadwick Haedaecker.
"Where did you get that recording?" he shouted over the cheers of the crowd.