Barney Chard, thirty-seven—financier, entrepreneur, occasional blackmailer, occasional con man, and very competent in all these activities—stood on a rickety wooden lake dock, squinting against the late afternoon sun, and waiting for his current business prospect to give up the pretense of being interested in trying to catch fish. The prospect, who stood a few yards farther up the dock, rod in one hand, was named Dr. Oliver B. McAllen. He was a retired physicist, though less retired than was generally assumed. A dozen years ago he had rated as one of the country's top men in his line. And, while.