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.
Despite their opposing personalities, a talented but directionless P.I. who is the black sheep of his family begrudgingly agrees to work as the in-house investigator for his overbearing mother, a successful attorney reeling from the recent dissolution of her marriage.