Sometimes called "the American Sherlock Holmes," Professor Craig Kennedy is a scientist detective based at Columbia University, where he applies his extensive knowledge of chemistry and psychology to the mysteries that come his way, and utilizes such cutting-edge devices as lie detectors and portable seismographs.

Kennedy appears in eighteen detective novels, and in The Soul Scar, he may be up against his most perplexing case yet—trying to unravel a murder mystery through the analysis of a beautiful woman's dreams.