Many years ago, Loren Pankratz got a call from a rare book dealer. The man was at the end of his career, he told Pankratz, and had a special book to sell. It had been passed down from his grandfather, and perhaps only three other copies existed in the world. He thought Pankratz, a former professor of psychology in Oregon who collects books on cons and frauds, might be interested. Pankratz bought the book, which was in German, and it sat on his shelf for years, unread. Then, years later,…
