Created by J. Sydney Jones Real-life criminalogist HANNS GROSS and fictional attorney/private investigator KARL WERTHEN are the heroes of a series of intricately plotted historical mysteries by author J. Sydney Jones set in turn-of-the-century Vienna. Often referred to as "the father of criminology," Doktor Hanns Gustav Adolf Gross (1847-1915) was an Austrian criminal jurist and examining magistrate who … Continue reading Hanns Gross & Karl Werthen →