St. Louis Trauma nurse Casey McDonough thinks her life is interesting enough. Her best friend still drops acid, her ex-husband is a cross-dressing psychiatrist, and her mother has turned the third floor of the family home into the Chapel of Eternal Vigilance.
Then, things begin to really go wrong when OB/Gyn Dr. Dale Hunsacker arrives. Handsome, wealthy and charismatic, the good doctor is enchanting the patients of the St. Louis hospital. But, Cassy believes he is a serial killer. And the only person who takes her seriously, is Hunsacker himself.
Caught in a spiral of suspicion and intimidation, Casey approaches ex-Marine, ex-Jesuit homicide sergeant Jack Scanlan for help. All she has are hunches for proof, but she'll do anything to stop the monster walking the halls of her hospital.