Blish had problems. There were alien forces to consider. There were human traitors who were prepared to sell out the Empire if the price was right. The price could be as high as planetary cotrol.
Wilkie Gordon was Alexander's second problem Wilkie was an outworlder with strange wild talents. He would be an invaluable ally or a deadly enemy. Blish had to decide and decide at once. If he made the wrong choice a world might die. If he made the right choice there was just a chance that Gordon could detect the aliens and renegades before they reached the J-Pile. . . .