Luther Trant leaves a university psychological laboratory to solve crimes in Chicago using the instruments and tests of the new science: word-association tests, measurements of the pulse and nerves, and close study of involuntary reactions. Cases include a man in a locked room, a fast watch, a red dress, a private bank puzzle and a cursed Mexican jade stone.
Early scientific-detective fiction, written when the lie detector was still an idea, and a sharp portrait of Chicago around 1910. Download the free EPUB.