Professor Craig Kennedy, the scientist detective created by author Arthur B. Reeves, is back. Using his knowledge of chemistry and psychoanalysis, as well as his sophisticated equipment to solve cases, he is sure to unravel any mystery presented to him. In the novel, "Craig Kennedy and Film tragedy", Professor Kennedy has been called in to a murder scene of a beautiful woman at a mansion. Alas! Stella Lamar, idol of the screen, lies dead. And as the detective pores over the scene of the crime, he discovers the tiniest scratch on the dead body, the proof of her poisoning...