Based upon the book and real-life story of FBI profiler Candice DeLong, "Killer Instinct" chronicles DeLong's pursuit of a serial killer who, after attacking her close friend, chooses her as his next victim.
A hyper-repressed and schlubby accountant (Jonas Chernick) strikes a deal with a worldly but disorganized stripper (Emily Hampshire): he'll help her with her crushing debt if she helps him become a better lover.
Former police officer Darby Spencer and her mystery novelist mother Victoria Spencer have opposite personalities but still embark on the unlikeliest of ventures: becoming partners in a private detective agency. They are mistaken as sisters as they tackle puzzling cases in Alder Bluffs.