In The Soul Scar, Craig Kennedy is faced with a complex mystery that involves both scientific and psychological elements. The plot revolves around a series of puzzling events and crimes that Kennedy must unravel using his scientific expertise and deductive skills.The novel combines elements of mystery and science, with Kennedy employing cutting-edge technology and forensic techniques of the time to investigate and solve the case. The story explores themes of crime and investigation through the lens of early 20th-century scientific advancements.