Detective Niora Marsden is on the trail of a mysterious serial killer who brands each prominent clergyman targeted with an ancient angelic symbol upon the forehead before viciously murdering them. Niora immediately recognizes the unusual but archaic symbol upon examination of the crime scene (from her college years) and decides to pay Professor Ian Slovensky-her past theology instructor, a visit to see if he can offer her any assistance in uncovering the true meaning behind the use of the angelic symbol as well as any clues concerning the serial killer's identity before another prominent clergyman falls victim to an untimely demise.